namelist_definition.xml

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="http://www.cgd.ucar.edu/~cam/namelist/namelist_definition_CAM.xsl"?>

<namelist_definition>

<!-- Each namelist variable is defined in an <entry> element.  The
     content of the element is the documentation of how the variable is
     used.  Other aspects of the variable's definition are expressed as
     attributes of the <entry> element.  Note that it is an XML requirement
     that the attribute values are enclosed in quotes.  The attributes are:

     id
          The variable's name.  *** N.B. *** The name must be lower case.
          The module convert all namelist variable names to lower case
          since Fortran is case insensitive.

     type
          An abbreviation of the fortran declaration for the variable.
	  Valid declarations are:

          char*n
	  integer
	  logical
	  real

	  Any of these types may be followed by a comma separated list of
	  integers enclosed in parenthesis to indicate an array.

	  The current namelist validation code only distinquishes between
	  string and non-string types.

     input_pathname
          Only include this attribute to indicate that the variable
          contains the pathname of an input dataset that resides in the
          CCSM inputdata directory tree.  Note that the variables
          containing the names of restart files that are used in branch
          runs don't reside in the inputdata tree and should not be given
          this attribute.

	  The recognized values are "abs" to indicate that an absolute
          pathname is required, or "rel:var_name" to indicate that the
          pathname is relative and that the namelist variable "var_name"
          contains the absolute root directory.

     category
          A category assigned for organizing the documentation.

     group
          The namelist group that the variable is declared in.

     valid_values
          This is an optional attribute that is mainly useful for variables
          that have only a small number of allowed values.
                                                                        -->

<!-- Nudging Parameters -->

<entry id="Nudge_Model" type="logical" category="nudging"
       group="nudging_nl" valid_values="" >
       Toggle Model Nudging ON/OFF.

        FORCING:
        --------
        Nudging tendencies are applied as a relaxation force between the current
        model state values and target state values derived from the avalilable
        analyses. The form of the target values is selected by the 'Nudge_Force_Opt'
        option, the timescale of the forcing is determined from the given
        'Nudge_TimeScale_Opt', and the nudging strength Alpha=[0.,1.] for each
        variable is specified by the 'Nudge_Xcoef' values. Where X={U,V,T,Q,PS}

               F_nudge = Alpha*((Target-Model(t_curr))/TimeScale

        WINDOWING:
        ----------
        The region of applied nudging can be limited using Horizontal/Vertical
        window functions that are constructed using a parameterization of the
        Heaviside step function.

        The Heaviside window function is the product of separate horizonal and vertical
        windows that are controled via 12 parameters:

            Nudge_Hwin_lat0:     Specify the horizontal center of the window in degrees.
            Nudge_Hwin_lon0:     The longitude must be in the range [0,360] and the
                                 latitude should be [-90,+90].
            Nudge_Hwin_latWidth: Specify the lat and lon widths of the window as positive
            Nudge_Hwin_lonWidth: values in degrees.Setting a width to a large value (e.g. 999)
                                 renders the window a constant in that direction.
            Nudge_Hwin_latDelta: Controls the sharpness of the window transition with a
            Nudge_Hwin_lonDelta: length in degrees. Small non-zero values yeild a step
                                 function while a large value yeilds a smoother transition.
            Nudge_Hwin_Invert  : A logical flag used to invert the horizontal window function
                                 to get its compliment.(e.g. to nudge outside a given window).

            Nudge_Vwin_Lindex:   In the vertical, the window is specified in terms of model
            Nudge_Vwin_Ldelta:   level indcies. The High and Low transition levels should
            Nudge_Vwin_Hindex:   range from [0,(NLEV+1)]. The transition lengths are also
            Nudge_Vwin_Hdelta:   specified in terms of model indices. For a window function
                                 constant in the vertical, the Low index should be set to 0,
                                 the High index should be set to (NLEV+1), and the transition
                                 lengths should be set to 0.001
            Nudge_Vwin_Invert  : A logical flag used to invert the vertical window function
                                 to get its compliment.
       Default: FALSE
       </entry>

<entry id="Nudge_Path" type="char*256" input_pathname="abs" category="nudging"
       group="nudging_nl" valid_values="" >
       Full pathname of analyses data to use for nudging.
        (e.g. '/$DIN_LOC_ROOT/atm/cam/nudging/')
       Default: none
       </entry>

<entry id="Nudge_File_Template" type="char*80" category="nudging"
       group="nudging_nl" valid_values="" >
       Template for Nudging analyses file names.
        (e.g. '%y/ERAI_ne30np4_L30.cam2.i.%y-%m-%d-%s.nc')
       Default: none
       </entry>

<entry id="Nudge_Times_Per_Day" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Number of analyses files per day.
        (e.g. 4 --> 6 hourly analyses)
       Default: none
       </entry>

<entry id="Model_Times_Per_Day" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Number of time to update model data per day.
        (e.g. 48 --> 1800 Second timestep)
       Default: none
       </entry>

<entry id="Nudge_Beg_Year" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Year at which Nudging Begins.
       Default: none
       </entry>

<entry id="Nudge_Beg_Month" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Month at which Nudging Begins.
       Default: none
       </entry>

<entry id="Nudge_Beg_Day" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Day at which Nudging Begins.
       Default: none
       </entry>

<entry id="Nudge_End_Year" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Year at which Nudging Ends.
       Default: none
       </entry>

<entry id="Nudge_End_Month" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Month at which Nudging Ends.
       Default: none
       </entry>

<entry id="Nudge_End_Day" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Day at which Nudging Ends.
       Default: none
       </entry>

<entry id="Nudge_Force_Opt" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Select the form of nudging forcing, where (t'==Analysis times ; t==Model Times)
         0 -> NEXT-OBS: Target=Anal(t'_next)
         1 -> LINEAR:   Target=(F*Anal(t'_curr) +(1-F)*Anal(t'_next))
                            F =(t'_next - t_curr )/Tdlt_Anal
       Default: 0
       </entry>

<entry id="Nudge_TimeScale_Opt" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Select the timescale of nudging force, where (t'==Analysis times ; t==Model Times)
         0 -->  TimeScale = 1/Tdlt_Anal
         1 -->  TimeScale = 1/(t'_next - t_curr )
       Default: 0
       </entry>

<entry id="Nudge_Uprof" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Profile index for U nudging.
         0 == OFF      (No Nudging of this variable)
         1 == CONSTANT (Spatially Uniform Nudging)
         2 == HEAVISIDE WINDOW FUNCTION
       Default: 0
       </entry>

<entry id="Nudge_Ucoef" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Normalized Coeffcient for U nudging.
         [0.,1.] fraction of nudging tendency applied.
       Default: 0.
       </entry>

<entry id="Nudge_Vprof" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Profile index for V nudging.
         0 == OFF      (No Nudging of this variable)
         1 == CONSTANT (Spatially Uniform Nudging)
         2 == HEAVISIDE WINDOW FUNCTION
       Default: 0
       </entry>

<entry id="Nudge_Vcoef" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Normalized Coeffcient for V nudging.
         [0.,1.] fraction of nudging tendency applied.
       Default: 0.
       </entry>

<entry id="Nudge_Tprof" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Profile index for T nudging.
         0 == OFF      (No Nudging of this variable)
         1 == CONSTANT (Spatially Uniform Nudging)
         2 == HEAVISIDE WINDOW FUNCTION
       Default: 0
       </entry>

<entry id="Nudge_Tcoef" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Normalized Coeffcient for T nudging.
         [0.,1.] fraction of nudging tendency applied.
       Default: 0.
       </entry>

<entry id="Nudge_Qprof" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Profile index for Q nudging.
         0 == OFF      (No Nudging of this variable)
         1 == CONSTANT (Spatially Uniform Nudging)
         2 == HEAVISIDE WINDOW FUNCTION
       Default: 0
       </entry>

<entry id="Nudge_Qcoef" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Normalized Coeffcient for Q nudging.
         [0.,1.] fraction of nudging tendency applied.
       Default: 0.
       </entry>

<entry id="Nudge_PSprof" type="integer" category="nudging"
       group="nudging_nl" valid_values="" >
       Profile index for PS nudging.
         0 == OFF      (No Nudging of this variable)
         1 == CONSTANT (Spatially Uniform Nudging)
         2 == HEAVISIDE WINDOW FUNCTION
       Default: 0
       </entry>

<entry id="Nudge_PScoef" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Normalized Coeffcient for PS nudging.
         [0.,1.] fraction of nudging tendency applied.
       Default: 0.
       </entry>

<entry id="Nudge_Hwin_lat0" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       LAT0 center of Horizontal Window in degrees [-90.,90.].
       Default: none
       </entry>

<entry id="Nudge_Hwin_latWidth" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of LAT Window in degrees.
       Default: none
       </entry>

<entry id="Nudge_Hwin_latDelta" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of transition which controls the steepness of window transition in latitude.
        0. --> Step function
       Default: none
       </entry>

<entry id="Nudge_Hwin_lon0" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       LON0 center of Horizontal Window in degrees [0.,360.].
       Default: none
       </entry>

<entry id="Nudge_Hwin_lonWidth" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of LON Window in degrees.
       Default: none
       </entry>

<entry id="Nudge_Hwin_lonDelta" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of transition which controls the steepness of window transition in longitude.
        0. --> Step function
       Default: none
       </entry>

<entry id="Nudge_Hwin_Invert" type="logical" category="nudging"
       group="nudging_nl" valid_values="" >
       Invert Horizontal Window Function to its Compliment.
         TRUE  = value=0 inside the specified window, 1 outside
         FALSE = value=1 inside the specified window, 0 outside
       Default: FALSE
       </entry>

<entry id="Nudge_Vwin_Hindex" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       HIGH Level Index for Verical Window specified in terms of model level indices.
         (e.g. For a 30 level model, Nudge_Vwin_Hindex ~ 30 )
       Default: none
       </entry>

<entry id="Nudge_Vwin_Hdelta" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of transition for HIGH end of Vertical Window.
       Default: none
       </entry>

<entry id="Nudge_Vwin_Lindex" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       LOW Level Index for Verical Window specified in terms of model level indices.
         (e.g. Nudge_Vwin_Lindex ~ 0 )
       Default: none
       </entry>

<entry id="Nudge_Vwin_Ldelta" type="real" category="nudging"
       group="nudging_nl" valid_values="" >
       Width of transition for LOW end of Vertical Window.
       Default: none
       </entry>

<entry id="Nudge_Vwin_Invert" type="logical" category="nudging"
       group="nudging_nl" valid_values="" >
       Invert Vertical Window Function to its Compliment.
         TRUE  = value=0 inside the specified window, 1 outside
         FALSE = value=1 inside the specified window, 0 outside
       Default: FALSE
       </entry>


<!-- Aerosols: Data (CAM version) -->

<entry id="bndtvaer" type="char*256" input_pathname="abs" category="aero_data_cam"
       group="cam3_aero_data_nl" valid_values="" >
Full pathname of time-variant boundary dataset for aerosol masses.
Default: set by build-namelist.
</entry>

<entry id="cam3_aero_data_on" type="logical" category="aero_data_cam"
       group="cam3_aero_data_nl" valid_values="" >
Add CAM3 prescribed aerosols to the physics buffer.
Default: FALSE
</entry>

<!-- Coupler between Physics and Dynamics -->

<entry id="phys_alltoall" type="integer"  category="perf_dp_coup"
       group="phys_grid_nl" valid_values="0,1,2,11,12,13">
Dynamics/physics transpose method for nonlocal load-balance.
0: use mpi_alltoallv.
1: use point-to-point MPI-1 two-sided implementation.
2: use point-to-point MPI-2 one-sided implementation if supported, otherwise use
   MPI-1 implementation.
3: use Co-Array Fortran implementation if supported, otherwise use MPI-1 implementation.
11-13: use mod_comm, choosing any of several methods internal to mod_comm.  The method
   within mod_comm (denoted mod_method) has possible values 0,1,2 and is set according
   to mod_method = phys_alltoall - modmin_alltoall, where modmin_alltoall is 11.
-1: use option 1 when each process communicates with less than half of the other
   processes, otherwise use option 0 (if max_nproc_smpx and nproc_busy_d are both &gt; npes/2).
Default: -1
</entry>

<entry id="phys_chnk_per_thd" type="integer"  category="perf_dp_coup"
       group="phys_grid_nl" valid_values="">
Select target number of chunks per thread.  Must be positive.
Default: 1
</entry>

<entry id="phys_loadbalance" type="integer"  category="perf_dp_coup"
       group="phys_grid_nl" valid_values="">
Physics grid decomposition options.
-1: each chunk is a dynamics block.
 0: chunk definitions and assignments do not require interprocess comm.
 1: chunk definitions and assignments do not require internode comm.
 2: optimal diurnal, seasonal, and latitude load-balanced chunk definition and assignments.
 3: chunk definitions and assignments only require communication with one other process.
 4: concatenated blocks, no load balancing, no interprocess communication.
Default: 2
</entry>

<entry id="phys_twin_algorithm" type="integer"  category="perf_dp_coup"
       group="phys_grid_nl" valid_values="">
Physics grid decomposition options.
 0: assign columns to chunks as single columns, wrap mapped across chunks
 1: use (day/night; north/south) twin algorithm to determine load-balanced pairs of
      columns and assign columns to chunks in pairs, wrap mapped
Default: 0 for unstructured grid dycores, 1 for lat/lon grid dycores
</entry>

<!-- Diagnostics -->

<entry id="diag_cnst_conv_tend" type="char*8"  category="diagnostics"
       group="cam_diag_opts" valid_values="none,q_only,all" >
Output constituent tendencies due to convection.  Set to
'none', 'q_only' or 'all'.
Default: 'q_only'
</entry>

<entry id="do_circulation_diags" type="logical"  category="diagnostics"
       group="circ_diag_nl" valid_values="" >
Turns on TEM circulation diagnostics history output.  Only valid for FV dycore.

Default: .false.,  unless it is overridden (WACCM with interactive chemistry and a few other specific
          configurations do this)
</entry>

<entry id="print_energy_errors" type="logical"  category="diagnostics"
       group="check_energy_nl" valid_values="" >
Turn on verbose output identifying columns that fail energy/water
conservation checks.
Default: FALSE
</entry>

<entry id="print_qneg_warn" type="char*8"  category="diagnostics"
       group="qneg_nl" valid_values="summary,timestep,off" >
Control the writing of qneg3 and qneg4 warning messages.
'summary' causes a summary of QNEG3 and QNEG4 errors to be
    printed at the end of the run
'timestep' causes a summary of QNEG3 and QNEG4 errors to be printed at the
    end of each timestep. The total is reset at the end of each timestep.
'off' causes the qneg3 and qneg4 warnings to be supressed.
Note that these settings do not affect the availability of qneg
    history variables.
Default: 'summary'
</entry>

<!-- Dry Convective Adjustment -->

<entry id="dadadj_nlvdry" type="integer"  category="dry_conv_adj"
       group="dadadj_nl" valid_values="" >
Number of layers from the top of the model over which to do dry convective
adjustment. Must be less than plev (the number of vertical levels).
Default: 3
</entry>

<entry id="dadadj_niter" type="integer"  category="dry_conv_adj"
       group="dadadj_nl" valid_values="" >
The maximum number of iterations to achieve convergence in dry adiabatic adjustment.
For WACCM-X it can be advantageous to use a number which is much higher than the CAM
default.
Default: 15
</entry>

<!-- Dynamics: Finite Volume -->

<entry id="fv_nsplit" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Number of dynamics timesteps per physics timestep. If zero, a best-estimate
will be automatically calculated.
Default: 0
</entry>

<entry id="fv_nspltrac" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Number of tracer advection timesteps per physics timestep.
Nsplit is partitioned into nspltrac and nsplit/nspltrac,
with the latter being the number of dynamics timesteps per
tracer timestep, possibly rounded upward; after initialization,
the code quantity nsplit is redefined to be the number of
dynamics timesteps per tracer timestep.
Default: 0
</entry>

<entry id="fv_nspltvrm" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Number of vertical re-mapping timesteps per physics timestep.
Nspltrac is partitioned into nspltvrm and nspltrac/nspltvrm,
with the latter being the number of tracer timesteps per
re-mapping timestep, possibly rounded upward; after initialization,
the code quantity nspltrac is redefined to be the number of
tracer timesteps per re-mapping timestep.
Default: 0
</entry>

<entry id="fv_iord" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Order (mode) of X interpolation (1,..,6).
East-West transport scheme.
   = 1: first order upwind
   = 2: 2nd order van Leer (Lin et al 1994)
   = 3: standard PPM
   = 4: enhanced PPM (default)
Default: 4
</entry>

<entry id="fv_jord" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Order (mode) of Y interpolation (1,..,6).
North-South transport scheme.
   = 1: first order upwind
   = 2: 2nd order van Leer (Lin et al 1994)
   = 3: standard PPM
   = 4: enhanced PPM (default)
Default: 4
</entry>

<entry id="fv_kord" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Scheme to be used for vertical mapping.
   = 1: first order upwind
   = 2: 2nd order van Leer (Lin et al 1994)
   = 3: standard PPM
   = 4: enhanced PPM (default)
Default: 4
</entry>

<entry id="fv_conserve" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag indicating whether the dynamics uses internal algorithm for energy
conservation.
Default: .false.
</entry>

<entry id="fv_filtcw" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="0,1" >
Enables optional filter for intermediate c-grid winds, (courtesy of Bill Putman).
Default: 0
</entry>

<entry id="fv_fft_flt" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="0,1" >
1 for FFT filter always, 0 for combined algebraic/FFT filter.  The value 0
is used for CAM3, otherwise it is using the value 1.
Default: set by build-namelist
</entry>

<entry id="fv_div24del2flag" type="integer"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="2,4,42" >
Chooses type of divergence damping and velocity diffusion.
div24del2flag = 2 for ldiv2 (default),
              = 4 for ldiv4,
              = 42 for ldiv4 + ldel2
where
ldiv2: 2nd-order divergence damping everywhere and increasing in top layers
ldiv4: 4th-order divergence damping
ldel2: 2nd-order velocity-component damping targetted to top layers,
       with coefficient del2coef

Default: set by build-namelist
</entry>

<entry id="fv_del2coef" type="real"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Chooses level of velocity diffusion.
Default: 3.0e5
</entry>

<entry id="fv_high_order_top" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to extend standard 4th-order PPM scheme to model top.
Default: .false.
</entry>

<entry id="fv_am_geom_crrct" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to turn on corrections in FV geometry and/or pressure terms.
Default: .false.
</entry>

<entry id="fv_am_correction" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to turn on corrections that improve angular momentum conservation.
Default: .false.
</entry>

<entry id="fv_am_fixer" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to apply an arbitrary fix based on solid-body rotation to the zonal
velocity fields to improve conservation of angular momentum.
Default: .false.
</entry>

<entry id="fv_am_fix_lbl" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to apply the fixer turned on by fv_am_fixer level by level.  The
intent is to not contaminate the stratospheric circulation with
tropospheric AM loss, where it is most likely greatest (due to the larger
divergence fields).  This option is experimental.
Default: .false.
</entry>

<entry id="fv_am_diag" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Flag to turn on a diagnostic calculation of angular momentum which is
written to the log file at each time step.  Also enables calculation of
fields written to history file which are used in conjuction with those
enabled by do_circulation_diags for detailed analysis.
Default: .false.
</entry>

<entry id="fv_high_altitude" type="logical"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="" >
Switch to apply variable physics appropriate for the thermosphere and ionosphere
Default: set by build-namelist
</entry>

<entry id="fv_print_dpcoup_warn" type="char*8"  category="dyn_fv"
       group="dyn_fv_inparm" valid_values="off,full" >
Flag to determine how to handle dpcoup warning messages
Default: off
</entry>

<!-- MPI configuration for FV dycore -->

<entry id="force_2d" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Set to 1 to force the 2D transpose computation when a 1D decomposition is
used.  This is intended for debugging purposes only.
Default: 0
</entry>

<entry id="geopktrans" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
Geopotential method (routines geopk, geopk16, or geopk_d).
  =0 for transpose method;
  =1 for method using semi-global z communication with optional 16-byte arithmetic;
  =2 for method using local z communication;
method 0, method 1 with 16-byte arithmetic and method 2 are all bit-for-bit across decompositions;
method 0 scales better than method 1 with npr_z, and method 1 is superior to method 0 for small npr_z;
The optimum speed is attained using either method 1 with 8-byte
arithmetic (standard for geopk16) or method 2 when utilizing the
optimal value for the associated parameter geopkblocks; for the last
two subcycles of a timestep, method 0 is automatically used; see
geopk.F90 and cd_core.F90.

Default: 0
</entry>

<entry id="geopkblocks" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Geopotential method 2 pipeline parameter (routine geopk_d).
geopk_d implements a pipeline algorithm by dividing the
information that must be moved between processes into blocks. geopkblocks
specifies the number of blocks to use. The larger the number of blocks,
the greater the opportunity for overlapping communication with computation
and for decreasing instantaneous bandwidth requirements. The smaller the
number of blocks, the fewer MPI messages sent, decreasing MPI total latency.
See geopk_d within geopk.F90.
Default: 1
</entry>

<entry id="modc_sw_dynrun" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
Mod_comm irregular underlying communication method for dyn_run/misc.
0 for original mp_sendirr/mp_recvirr
1 for mp_swapirr and a point-to-point implementation of communication pattern
2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern
Default: 0
</entry>

<entry id="modc_hs_dynrun" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication handshaking for dyn_run/misc
Default: .true.
</entry>

<entry id="modc_send_dynrun" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication blocking send for dyn_run/misc,
false for nonblocking send
Default: .true.
</entry>

<entry id="modc_mxreq_dynrun" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Maximum number of outstanding nonblocking MPI requests to allow when
using mp_swapirr and point-to-point communications for dyn_run/misc.
Setting this less than the maximum can improve robustness for large process
count runs. If set to less than zero, then do not limit the number of
outstanding send/receive requests.
Default: -1 (so no limit)
</entry>

<entry id="modc_sw_cdcore" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
Mod_comm irregular underlying communication method for cd_core/geopk
0 for original mp_sendirr/mp_recvirr
1 for mp_swapirr and a point-to-point implementation of communication pattern
2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern
Default: 0
</entry>

<entry id="modc_hs_cdcore" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication handshaking for cd_core/geopk
Default: .true.
</entry>

<entry id="modc_send_cdcore" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for geopk_d and mod_comm irregular communication blocking send for
cd_core/geopk; false for nonblocking send.
Default: .true.
</entry>

<entry id="modc_mxreq_cdcore" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Maximum number of outstanding nonblocking MPI requests to allow when
using mp_swapirr and point-to-point communications for cd_core/geopk.
Setting this less than the maximum can improve robustness for large process
count runs. If set to less than zero, then do not limit the number of
outstanding send/receive requests.
Default: -1 (so no limit)
</entry>

<entry id="modc_sw_gather" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
Mod_comm irregular underlying communication method for gather
0 for original mp_sendirr/mp_recvirr
1 for mp_swapirr and a point-to-point implementation of communication pattern
2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern
Default: 1
</entry>

<entry id="modc_hs_gather" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication handshaking for gather
Default: .true.
</entry>

<entry id="modc_send_gather" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication blocking send for gather,
false for nonblocking send
Default: .true.
</entry>

<entry id="modc_mxreq_gather" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Maximum number of outstanding nonblocking MPI requests to allow when
using mp_swapirr and point-to-point communications for gather.
Setting this less than the maximum can improve robustness for large process
count runs. If set to less than zero, then do not limit the number of
outstanding send/receive requests.
Default: 64
</entry>

<entry id="modc_sw_scatter" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
Mod_comm irregular underlying communication method for scatter
0 for original mp_sendirr/mp_recvirr
1 for mp_swapirr and a point-to-point implementation of communication pattern
2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern
Default: 0
</entry>

<entry id="modc_hs_scatter" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication handshaking for scatter
Default: .false.
</entry>

<entry id="modc_send_scatter" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication blocking send for scatter,
false for nonblocking send
Default: .true.
</entry>

<entry id="modc_mxreq_scatter" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Maximum number of outstanding nonblocking MPI requests to allow when
using mp_swapirr and point-to-point communications for scatter.
Setting this less than the maximum can improve robustness for large process
count runs. If set to less than zero, then do not limit the number of
outstanding send/receive requests.
Default: -1 (so no limit)
</entry>

<entry id="modc_sw_tracer" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Mod_comm irregular underlying communication method for multiple tracers
0 for original mp_sendtrirr/mp_recvtrirr
1 for mp_swaptrirr and point-to-point communications
2 for mp_swaptrirr and all-to-all communications
Default: 0
</entry>

<entry id="modc_hs_tracer" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1,2" >
True for mod_comm irregular communication handshaking for multiple tracers
Default: .true.
</entry>

<entry id="modc_send_tracer" type="logical"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
True for mod_comm irregular communication blocking send for multiple
tracers, false for nonblocking send
Default: .true.
</entry>

<entry id="modc_mxreq_tracer" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Maximum number of outstanding nonblocking MPI requests to allow when
using mp_swaptrirr and point-to-point communications for multiple tracers.
Setting this less than the maximum can improve robustness for large process
count runs. If set to less than zero, then do not limit the number of
outstanding send/receive requests.
Default: -1 (so no limit)
</entry>

<entry id="modc_onetwo" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="1,2" >
One or two simultaneous mod_comm irregular communications (excl. tracers)
Default: 2
</entry>

<entry id="modc_tracers" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Max number of tracers for simultaneous mod_comm irregular communications
Default: 3
</entry>

<entry id="modcomm_gatscat" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1" >
For mod_comm gather/scatters, 0 for temporary contiguous buffers; 1 for mpi derived
types.
Default: 0
</entry>

<entry id="modcomm_geopk" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1" >
For geopk (geopktrans=1) messages, 0 for temporary contiguous buffers; 1 for mpi derived
types.
Default: 0
</entry>

<entry id="modcomm_transpose" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="0,1" >
For mod_comm transposes, 0 for temporary contiguous buffers; 1 for mpi derived
types.
Default: 0
</entry>

<entry id="npr_yz" type="integer(4)"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
A four element integer array which specifies the YZ and XY decompositions.
The first two elements are the number of Y subdomains and number of Z
subdomains in the YZ decomposition.  The second two elements are the number
of X subdomains and the number of Y subdomains in the XY decomposition.
Note that both the X and Y subdomains must contain at least 3 grid points.
For example, a grid with 96 latitudes can contain no more than 32 Y
subdomains.  There is no restriction on the number of grid points (levels)
in a Z subdomain, but note that the threading parallelism in the FV dycore
is over levels, so for parallel efficiency it is best to have at least the
number of levels in each Z subdomain as there are threads available.

There are a couple of rough rules of thumb to follow when setting the 2D
decompositions.  The first is that the number of Y subdomains in the YZ
decomposition should be the same as the number of Y subdomains in the XY
decomposition (npr_yz(1) == npr_yz(4)).  The second is that the total
number of YZ subdomains (npr_yz(1)*npr_yz(2)) should equal the total number
of XY subdomains (npr_yz(3)*npr_yz(4)).

Default: ntask,1,1,ntask where ntask is the number of MPI tasks.  This is a
1D decomposition in latitude.
</entry>

<entry id="fv_ct_overlap" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Overlapping of trac2d and cd_core subcycles.
Default: 0
</entry>

<entry id="fv_trac_decomp" type="integer"  category="dyn_fv"
       group="spmd_fv_inparm" valid_values="" >
Size of tracer domain decomposition for trac2d.
Default: 1
</entry>

<entry id="print_filew_warn" type="char*8"  category="dyn_fv"
       group="fill_nl" valid_values="off,full" >
Control the writing of filew warning messages.
Default: 'off'
</entry>

<!-- Dynamics: Finite Volume: Offline -->

<entry id="met_cell_wall_winds" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
TRUE =&gt; the offline meteorology winds are defined on the model grid cell walls.
Default: FALSE
</entry>

<entry id="met_data_file" type="char*256" input_pathname="rel:met_data_path" category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
Name of file that contains the offline meteorology data.
Default: none
</entry>

<entry id="met_data_path" type="char*256" input_pathname="abs" category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
Name of directory that contains the offline meteorology data.
Default: none
</entry>

<entry id="met_filenames_list" type="char*256" input_pathname="abs" category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
Name of file that contains names of the offline meteorology data files.
Default: none
</entry>

<entry id="met_remove_file" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
TRUE =&gt; the offline meteorology file will be removed from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="met_rlx_top" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
(km) top of relaxation region of winds for offline waccm
Default: 60.
</entry>

<entry id="met_rlx_bot" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
(km) bottom of relaxation region of winds for offline waccm
Default: 50.
</entry>

<entry id="met_rlx_bot_top" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
(km) top of ramping relaxation region for metdata at model bottom
Default: 0.
</entry>

<entry id="met_rlx_bot_bot" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
(km) bottom of ramping relaxation region for metdata at model bottom
Default: 0.
</entry>

<entry id="met_rlx_time" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
Relaxation time (hours) applied to specified meteorology.
 - positive values less then time step size gives 100% nudging
 - negative values gives 0.0% nudging (infinite relaxation time)
Default: 0.0
</entry>

<entry id="met_nudge_only_uvps" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
if true, nudge only u, v and ps. If false, nudge other fields as well
(T, Q, TS, SHOWH, TAUX, TAUY, SHFLX, QFLX)
Default: true
</entry>

<entry id="met_fix_mass" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
switch to turn on/off mass fixer for offline driver
Default: true
</entry>

<entry id="met_shflx_name" type="char*16"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
srf heat flux field name in met data file
Default: 'SHFLX'
</entry>

<entry id="met_qflx_name" type="char*16"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
water vapor flux field name in met data file
Default: 'QFLX'
</entry>

<entry id="met_shflx_factor" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
multiplication factor for srf heat flux
Default: 1.0
</entry>

<entry id="met_qflx_factor" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
multiplication factor for water vapor flux
Default: 1.0
</entry>

<entry id="met_snowh_factor" type="real"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
multiplication factor for snow hieght
Default: 1.0
</entry>

<entry id="met_srf_feedback" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If false then do not allow surface models feedbacks influence climate
Default: true
</entry>

<entry id="met_srf_nudge_flux" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge meteorology surface fields TAUX, TAUY, SHFLX, QFLX rather than force
Default: true
</entry>

<entry id="met_srf_land" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge meteorology surface fields over the land. If false, then fields are
still nudged over the ocean.
Default: true
</entry>

<entry id="met_srf_land_scale" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If met_srf_land is false, then determines whether to nudge proportional to the non-land
fraction (i.e. 1 - land fraction) (true), or to nudge everywhere except where land
fraction is 1 (false).
Default: false
</entry>

<entry id="met_srf_rad" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge meteorology surface fields from radiation. These include ASDIR, ASDIF,
ALDIR, ALDIF, and LWUP.
Default: false
</entry>

<entry id="met_srf_refs" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge meteorology reference surface fields. These include TSREF, QREF, and U10.
Default: false
</entry>

<entry id="met_srf_sst" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge meteorology reference for sea surface temperature and sea ice fraction
(SST and SEAICEFRAC).
Default: false
</entry>

<entry id="met_srf_tau" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge surface sheer stress (TAUX, TAUY) from the meteorology.
Default: true
</entry>

<entry id="met_nudge_temp" type="logical"  category="dyn_fv_off"
       group="metdata_nl" valid_values="" >
If true nudge atmospheric temperature (T) from the meteorology.
Default: true
</entry>

<!-- Dynamics: Eulerian Spectral -->

<entry id="eul_dif2_coef" type="real"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="" >
del^2 horizontal diffusion coefficient.  This is used above the Nth order
diffusion.
Default: set by build-namelist
</entry>

<entry id="eul_hdif_order" type="integer"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
Order (N) of horizontal diffusion operator used below the sponge layers.
N must be a positive multiple of 2.
Default: 4
</entry>

<entry id="eul_hdif_kmnhdn" type="integer"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
The order N horizontal diffusion operator will be used in and below the
layer specified by this variable.
Default: 4
</entry>

<entry id="eul_hdif_coef" type="real"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
Nth order horizontal diffusion coefficient.
Default: set by build-namelist
</entry>

<entry id="eul_divdampn" type="real"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
Number of days (from timestep 0) to run divergence damper. Use only if spectral
model becomes dynamicallly unstable during initialization. Suggested value:
2. (Value must be &gt;= 0.)  Default: 0.
</entry>

<entry id="eul_tfilt_eps" type="real"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
Time filter coefficient.  Default: 0.06
</entry>

<entry id="eul_kmxhdc" type="integer"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="">
Number of levels over which to apply Courant limiter, starting at top of
model.
Default: 5
</entry>

<entry id="eul_nsplit" type="integer"  category="dyn_eul"
       group="dyn_eul_inparm" valid_values="" >
Number of dynamics timesteps per physics timestep. If zero, a best-estimate
will be automatically calculated.
Default: 1
</entry>

<!-- MPI configuration for global spectral dycores (EUL and SLD) -->

<entry id="dyn_allgather" type="integer"  category="dyn_spectral_spmd"
       group="spmd_dyn_inparm" valid_values="">
Spectral dynamics gather option.
   0: use mpi_allgatherv
   1: use point-to-point MPI-1 two-sided implementation
   2: use point-to-point MPI-2 one-sided implementation if supported,
        otherwise use MPI-1 implementation
   3: use Co-Array Fortran implementation if supported,
        otherwise use MPI-1 implementation
Default: 0
</entry>

<entry id="dyn_alltoall" type="integer"  category="dyn_spectral_spmd"
       group="spmd_dyn_inparm" valid_values="">
Spectral dynamics transpose option.
   0: use mpi_alltoallv
   1: use point-to-point MPI-1 two-sided implementation
   2: use point-to-point MPI-2 one-sided implementation if supported,
        otherwise use MPI-1 implementation
   3: use Co-Array Fortran implementation if supported,
        otherwise use MPI-1 implementation
Default: 0
</entry>

<entry id="dyn_equi_by_col" type="logical"  category="dyn_spectral_spmd"
       group="spmd_dyn_inparm" valid_values="">
Flag indicating whether to assign latitudes to equidistribute columns or
latitudes. This only matters when using a reduced grid.
Default: TRUE
</entry>

<entry id="dyn_npes" type="integer"  category="dyn_spectral_spmd"
       group="spmd_dyn_inparm" valid_values="">
Number of processes assigned to dynamics (SE, EUL and SLD dycores).
Default: Total number of processes assigned to job.
</entry>

<entry id="dyn_npes_stride" type="integer"  category="dyn_spectral_spmd"
       group="spmd_dyn_inparm" valid_values="">
Stride for dynamics processes (EUL and SLD dycores).
E.g., if stride=2, assign every second process to the dynamics.
Default: 1
</entry>

<!-- Gravity Wave Drag -->

<entry id="use_gw_oro" type="logical" category="gw_drag"
       group="phys_ctl_nl" valid_values="" >
Whether or not to enable gravity waves produced by orography.
Default: set by build-namelist.
</entry>

<entry id="use_gw_front" type="logical" category="gw_drag"
       group="phys_ctl_nl" valid_values="" >
Whether or not to enable gravity waves produced by frontogenesis.
Default: set by build-namelist.
</entry>

<entry id="use_gw_front_igw" type="logical" category="gw_drag"
       group="phys_ctl_nl" valid_values="" >
Whether or not to enable inertial gravity waves produced by frontogenesis.
Default: set by build-namelist.
</entry>

<entry id="use_gw_convect_dp" type="logical" category="gw_drag"
       group="phys_ctl_nl" valid_values="" >
Whether or not to enable gravity waves produced by deep convection.
Default: set by build-namelist.
</entry>

<entry id="use_gw_convect_sh" type="logical" category="gw_drag"
       group="phys_ctl_nl" valid_values="" >
Whether or not to enable gravity waves produced by shallow convection.
Default: .false.
</entry>

<entry id="pgwv" type="integer" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Gravity wave spectrum dimension (wave numbers are from -pgwv to pgwv).
Default: set by build-namelist.
</entry>

<entry id="gw_dc" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Width of speed bins (delta c) for gravity wave spectrum (reference wave
speeds are from -pgwv*dc to pgwv*dc).
Default: set by build-namelist.
</entry>

<entry id="pgwv_long" type="integer" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Dimension for long wavelength gravity wave spectrum (wave numbers are from
-pgwv_long to pgwv_long).
Default: set by build-namelist.
</entry>

<entry id="gw_dc_long" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Width of speed bins (delta c) for long wavelength gravity wave spectrum
(reference wave speeds are from -pgwv_long*dc_long to pgwv_long*dc_long).
Default: set by build-namelist.
</entry>

<entry id="tau_0_ubc" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Force the stress due to gravity waves to be zero at the top of the model.
In the low-top model, this helps to conserve momentum and produce a QBO.
Default: set by build-namelist.
</entry>

<entry id="gw_limit_tau_without_eff" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Apply limiters to tau before applying the efficiency factor, rather than
afterward.
Default: set by build-namelist
</entry>

<entry id="gw_apply_tndmax" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Apply limiter on maximum wind tendency from stress divergence in gravity wave drag scheme.
Default: set by build-namelist
</entry>

<entry id="effgw_beres_dp" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency associated with convective gravity waves from the Beres
scheme (deep convection).
Default: set by build-namelist.
</entry>

<entry id="effgw_beres_sh" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency associated with convective gravity waves from the Beres
scheme (shallow convection).
Default: set by build-namelist.
</entry>

<entry id="effgw_cm" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency associated with gravity waves from frontogenesis.
Default: set by build-namelist.
</entry>

<entry id="effgw_cm_igw" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency associated with inertial gravity waves from frontogenesis.
Default: set by build-namelist.
</entry>

<entry id="effgw_oro" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency associated with orographic gravity waves.
Default: set by build-namelist.
</entry>

<entry id="use_gw_rdg_beta" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to enable gravity waves produced by meso-Beta Ridges.
Default: set by build-namelist
</entry>

<entry id="n_rdg_beta" type="integer" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Number of meso-Beta ridges (per gridbox) to invoke.
Default: 10 (set by build-namelist)
</entry>

<entry id="effgw_rdg_beta" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency scaling factor associated with anisotropic OGW.
Default: set by build-namelist.
</entry>

<entry id="effgw_rdg_beta_max" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Max efficiency associated with anisotropic OGW.
Default: 1.0
</entry>

<entry id="rdg_beta_cd_llb" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Drag coefficient for obstacles in low-level flow.
Default: 1.0
</entry>

<entry id="trpd_leewv_rdg_beta" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to allow trapping for meso-Beta Ridges.
Default: FALSE (set by build-namelist)
</entry>

<entry id="use_gw_rdg_gamma" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to enable gravity waves produced by meso-gamma Ridges.
Default: FALSE (set by build-namelist)
</entry>

<entry id="n_rdg_gamma" type="integer" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Number of meso-gamma ridges (per gridbox) to invoke.
Default: -1 (set by build-namelist)
</entry>

<entry id="effgw_rdg_gamma" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Efficiency scaling factor associated with anisotropic OGW.
Default: set by build-namelist.
</entry>

<entry id="effgw_rdg_gamma_max" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Max efficiency associated with anisotropic OGW.
Default: 1.0
</entry>

<entry id="rdg_gamma_cd_llb" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Drag coefficient for obstacles in low-level flow.
Default: 1.0
</entry>

<entry id="trpd_leewv_rdg_gamma" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to allow trapping for meso-gamma Ridges.
Default: set by build-namelist
</entry>

<entry id="bnd_rdggm" type="char*256" input_pathname="abs" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Full pathname of boundary dataset for meso-gamma ridges.
Default: set by build-namelist.
</entry>

<entry id="fcrit2" type="real"  category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Critical Froude number squared (used only for orographic waves).
Default: set by build-namelist.
</entry>

<entry id="gw_oro_south_fac" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Factor to multiply tau by, for orographic waves in the southern hemisphere.
Default: 1._r8
</entry>

<entry id="gw_prndl" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Inverse Prandtl number used in gravity wave diffusion
Default: set by build-namelist
</entry>

<entry id="gw_qbo_hdepth_scaling" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Scaling factor for heating depth in gravity waves from convection.  If less than 1.0
this acts as an effective reduction of the gravity wave phase speeds needed to drive
the QBO.
Default: set by build-namelist
</entry>

<entry id="gw_lndscl_sgh" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Scale SGH by land fraction in gravity wave drag
Default: set by build-namelist
</entry>

<entry id="frontgfc" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Frontogenesis function critical threshold.
Default: set by build-namelist.
</entry>

<entry id="gw_drag_file" type="char*256" input_pathname="abs" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Full pathname of Beres lookup table data file for gravity waves sourced
from deep convection.
Default: set by build-namelist.
</entry>

<entry id="gw_drag_file_sh" type="char*256" input_pathname="abs" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Full pathname of Beres lookup table data file for gravity waves sourced
from shallow convection.
Default: set by build-namelist.
</entry>

<entry id="taubgnd" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Background source strength (used for waves from frontogenesis).
Default: set by build-namelist.
</entry>

<entry id="taubgnd_igw" type="real" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Background source strength (used for inertial waves from frontogenesis).
Default: set by build-namelist.
</entry>

<entry id="gw_polar_taper" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to use tapering at the poles to reduce the effects of
mid-scale gravity waves from frontogenesis.
Default: set by build-namelist.
</entry>

<entry id="gw_top_taper" type="logical" category="gw_drag"
       group="gw_drag_nl" valid_values="" >
Whether or not to apply tapering at the top of the model (above 0.6E-02 Pa)
to reduce undesired effects of gravity waves in the thermosphere/ionosphere.
Default: set by build-namelist
</entry>

<!-- Gravity Wave Ridge -->

<entry id="gw_rdg_do_divstream" type="logical" category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
If .true. use separate dividing streamlines for downslope wind and flow
splitting regimes ("DS" configuration).
If .false. use single dividing streamline as in Scinocca &amp; McFarlane
2000 ("SM" configuration).
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_do_smooth_regimes" type="logical" category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
If true, then use smooth regimes
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_do_adjust_tauoro" type="logical" category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
If true, then adujust tauoro
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_do_backward_compat" type="logical" category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
If true, then adjust for bit-for-bit answers with the ("N5") configuration
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_C_BetaMax_DS" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Enhancement factor for downslope wind stress in DS configuration.
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_C_GammaMax" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Enhancement factor for depth of downslope wind regime in DS configuration
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_Frx0" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Lower inverse Froude number limits on linear ramp terminating downslope wind regime for high mountains in DS configuration
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_Frx1" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Upper inverse Froude number limits on linear ramp terminating downslope wind regime for high mountains in DS configuration
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_C_BetaMax_SM" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Enhancement factor for downslope wind stress in SM configuration.
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_Fr_c" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Critical inverse4 Froude number
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_orohmin" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
minimum surface displacement height for orographic waves (m)
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_orovmin" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Minimum wind speed for orographic waves
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_orostratmin" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Minimum stratification allowing wave behavior
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_orom2min" type="real"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
Minimum stratification allowing wave behavior
Default: set by build-namelist.
</entry>

<entry id="gw_rdg_do_vdiff" type="logical"  category="gw_rdg"
       group="gw_rdg_nl" valid_values="" >
If TRUE gravity wave ridge scheme will contribute to vertical diffusion tendencies.
Default: TRUE
</entry>

<!-- Greenhouse Gases: CO2, CH4, N2O, CFC11, CFC12 (original CAM versions) -->

<entry id="bndtvghg" type="char*256" input_pathname="abs" category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
Full pathname of time-variant boundary dataset for greenhouse gas surface
values.
Default: set by build-namelist.
</entry>

<entry id="ch4vmr" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
CH4 volume mixing ratio.  This is used as the time invariant surface value
of CH4 if no time varying values are specified.
Default: set by build-namelist.
</entry>

<entry id="co2vmr" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
CO2 volume mixing ratio.  This is used as the time invariant surface value
of CO2 if no time varying values are specified.
Default: set by build-namelist.
</entry>

<entry id="co2vmr_rad" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
User override for the prescribed CO2 volume mixing ratio used by the radiation
calculation.  Note however that the prescribed value of CO2 which is sent
to the surface models is still the one that is set using either the
{{ hilight }}co2vmr{{ closehilight }} or the {{ hilight }}scenario_ghg{{ closehilight }} variables.
Default: not used
</entry>

<entry id="f11vmr" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
CFC11 volume mixing ratio adjusted to reflect contributions from many GHG
species.  This is used as the time invariant surface value of F11 if no
time varying values are specified.
Default: set by build-namelist.
</entry>

<entry id="f12vmr" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
CFC12 volume mixing ratio.  This is used as the time invariant surface value
of CFC12 if no time varying values are specified.
Default: set by build-namelist.
</entry>

<entry id="n2ovmr" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
N2O volume mixing ratio.  This is used as the time invariant surface value
of N2O if no time varying values are specified.
Default: set by build-namelist
</entry>

<entry id="ghg_yearstart_data" type="integer"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
Data start year.  Use in conjunction
with {{ hilight }}ghg_yearstart_model{{ closehilight }}.
Default: 0
</entry>

<entry id="ghg_yearstart_model" type="integer"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
Model start year.  Use in conjunction
with {{ hilight }}ghg_yearstart_data{{ closehilight }}.
Default: 0
</entry>

<entry id="ramp_co2_annual_rate" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
Amount of co2 ramping per year (percent).  Only used
if {{ hilight }}scenario_ghg{{ closehilight }} = 'RAMP_CO2_ONLY'
Default: 1.0
</entry>

<entry id="ramp_co2_cap" type="real"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
CO2 cap if &gt; 0, floor otherwise.  Specified as multiple or fraction of
inital value; e.g., setting to 4.0 will cap at 4x initial CO2 setting.
Only used if {{ hilight }}scenario_ghg{{ closehilight }} = 'RAMP_CO2_ONLY'
Default: boundless if {{ hilight }}ramp_co2_annual_rate{{ closehilight }} &gt; 0, zero otherwise.
</entry>

<entry id="ramp_co2_start_ymd" type="integer"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
Date on which ramping of co2 begins.  The date is encoded as an integer in
the form YYYYMMDD.  Only used if {{ hilight }}scenario_ghg{{ closehilight }} = 'RAMP_CO2_ONLY'
Default: 0
</entry>

<entry id="rampyear_ghg" type="integer"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="" >
If {{ hilight }}scenario_ghg{{ closehilight }} is set to "RAMPED" then the greenhouse
gas surface values are interpolated between the annual average values
read from the file specified by {{ hilight }}bndtvghg{{ closehilight }}.
In that case, the value of this variable (&gt; 0) fixes the year of the
lower bounding value (i.e., the value for calendar day 1.0) used in the
interpolation.  For example, if rampyear_ghg = 1950, then the GHG surface
values will be the result of interpolating between the values for 1950 and
1951 from the dataset.
Default: 0
</entry>

<entry id="scenario_ghg" type="char*16"  category="ghg_cam"
       group="chem_surfvals_nl" valid_values="FIXED,RAMPED,RAMP_CO2_ONLY,CHEM_LBC_FILE" >
Controls treatment of prescribed co2, ch4, n2o, cfc11, cfc12 volume mixing
ratios.  May be set to 'FIXED', 'RAMPED', 'RAMP_CO2_ONLY', or 'CHEM_LBC_FILE'.
FIXED =&gt; volume mixing ratios are fixed and have either default or namelist
         input values.
RAMPED =&gt; volume mixing ratios are time interpolated from the dataset
          specified by {{ hilight }}bndtvghg{{ closehilight }}.
RAMP_CO2_ONLY =&gt; only co2 mixing ratios are ramped at a rate determined by
                    the variables {{ hilight }}ramp_co2_annual_rate{{ closehilight }}, {{ hilight }}ramp_co2_cap{{ closehilight }},
                    and {{ hilight }}ramp_co2_start_ymd{{ closehilight }}.
CHEM_LBC_FILE =&gt; volume mixing ratios are set from the chemistry lower boundary
                    conditions dataset specified by {{ hilight }}flbc_file{{ closehilight }}.
Default: FIXED
</entry>

<!-- Greenhouse Gases: prognostic CH4, N2O, CFC11, CFC12 (original CAM versions) -->

<entry id="bndtvg" type="char*256" input_pathname="abs" category="ghg_chem"
       group="chem_inparm" valid_values="" >
Full pathname of time-variant boundary dataset for greenhouse gas production/loss
rates.  Only used by the simple prognostic GHG chemistry scheme that is
enabled via the argument "-prog_species GHG" to configure.
Default: set by build-namelist.
</entry>

<entry id="ghg_chem" type="logical"  category="ghg_chem"
       group="chem_inparm" valid_values="" >
This variable should not be set by the user.  It is set by build-namelist
when the user specifies the argument "-prog_species GHG" to configure which
turns on a simple prognostic chemistry scheme for CH4, N2O, CFC11 and
CFC12.
Default: set by build-namelist
</entry>


<!-- CO2 cycle for BGC -->

<entry id="co2_cycle_rad_passive" type="logical" category="co2_cycle"
       group="camexp" valid_values="" >
Flag to set rad_climate variable so that the prognostic CO2 controlled by
the co2_cycle module is radiatively passive.
Default: FALSE
</entry>

<entry id="co2_flag" type="logical"  category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
If TRUE turn on CO2 code.
Default: set by build-namelist
</entry>

<entry id="co2_readflux_fuel" type="logical"  category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
If TRUE read co2 fuel flux from file.
Default: set by build-namelist
</entry>

<entry id="co2_readflux_ocn" type="logical"  category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
If TRUE read co2 ocn flux from file.
Default: FALSE
</entry>

<entry id="co2_readflux_aircraft" type="logical"  category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
If TRUE read co2 aircraft flux from file.
Default: set by build-namelist
</entry>

<entry id="co2flux_ocn_file" type="char*256" input_pathname="abs" category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
Filepath for dataset containing CO2 flux from ocn.
Default: none
</entry>

<entry id="co2flux_fuel_file" type="char*256" input_pathname="abs" category="co2_cycle"
       group="co2_cycle_nl" valid_values="" >
Filepath for dataset containing CO2 flux from fossil fuel.
Default: none
</entry>

<!-- History and Initial Conditions Output -->

<entry id="avgflag_pertape" type="char*1(10)"  category="history"
       group="cam_history_nl" valid_values="A,B,I,X,M,L,S" >
Sets the averaging flag for all variables on a particular history file
series. Valid values are:

 A ==&gt; Average
 B ==&gt; GMT 00:00:00 average
 I ==&gt; Instantaneous
 M ==&gt; Minimum
 X ==&gt; Maximum
 L ==&gt; Local-time
 S ==&gt; Standard deviation

The default is to use the averaging flags for each variable that are set in
the code via calls to subroutine addfld.

Defaults: set in code via the addfld and add_default subroutine calls.
</entry>

<entry id="empty_htapes" type="logical"  category="history"
       group="cam_history_nl" valid_values="" >
If true don't put any of the variables on the history tapes by
default. Only output the variables that the user explicitly lists in
the {{ hilight }}fincl#{{ closehilight }} namelist items.
Default: FALSE
</entry>

<entry id="fexcl1" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 1st history file (by default the name
of this file contains the string "h0").
Default: none
</entry>
<entry id="fexcl2" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 2nd history file (by default the name
of this file contains the string "h1").
Default: none
</entry>
<entry id="fexcl3" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 3rd history file (by default the name
of this file contains the string "h2").
Default: none
</entry>
<entry id="fexcl4" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 4th history file (by default the name
of this file contains the string "h3").
Default: none
</entry>
<entry id="fexcl5" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 5th history file (by default the name
of this file contains the string "h4").
Default: none
</entry>
<entry id="fexcl6" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 6th history file (by default the name
of this file contains the string "h5").
Default: none
</entry>
<entry id="fexcl7" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 7th history file (by default the name
of this file contains the string "h6").
Default: none
</entry>
<entry id="fexcl8" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 8th history file (by default the name
of this file contains the string "h7").
Default: none
</entry>
<entry id="fexcl9" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 9th history file (by default the name
of this file contains the string "h8").
Default: none
</entry>
<entry id="fexcl10" type="char*24(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to exclude from the 10th history file (by default the name
of this file contains the string "h9").
Default: none
</entry>

<entry id="fincl1" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of fields to include on the first history file (by default the name of
this file contains the string "h0").  The added fields must be in Master
Field List.  The averaging flag for the output field can be specified by
appending a ":" and a valid averaging flag to the field name.  Valid flags
are:

 A ==&gt; Average
 B ==&gt; GMT 00:00:00 average
 I ==&gt; Instantaneous
 M ==&gt; Minimum
 X ==&gt; Maximum
 L ==&gt; Local-time
 S ==&gt; Standard deviation

Default:  set in code via the addfld and add_default subroutine calls.
</entry>
<entry id="fincl2" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 2nd history file (by default
the name of this file contains the string "h1").
Default: none.
</entry>
<entry id="fincl3" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 3rd history file (by default
the name of this file contains the string "h2").
Default: none.
</entry>
<entry id="fincl4" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 4th history file (by default
the name of this file contains the string "h3").
Default: none.
</entry>
<entry id="fincl5" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 5th history file (by default
the name of this file contains the string "h4").
Default: none.
</entry>
<entry id="fincl6" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 6th history file (by default
the name of this file contains the string "h5").
Default: none.
</entry>

<entry id="fincl7" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 7th history file (by default
the name of this file contains the string "h6").
Default: none.
</entry>
<entry id="fincl8" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 8th history file (by default
the name of this file contains the string "h7").
Default: none.
</entry>
<entry id="fincl9" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 9th history file (by default
the name of this file contains the string "h8").
Default: none.
</entry>
<entry id="fincl10" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for the 10th history file (by default
the name of this file contains the string "h9").
Default: none.
</entry>

<entry id="clubb_history" type="logical"  category="history"
       group="clubb_his_nl" valid_values="" >
if .true. then output CLUBBs history statistics
Default: false
</entry>

<entry id="clubb_rad_history" type="logical"  category="history"
       group="clubb_his_nl" valid_values="" >
if .true. then output CLUBBs radiative history statistics
Default: false
</entry>

<entry id="clubb_vars_zt" type="char*16(10000)"  category="history"
       group="clubb_stats_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for CLUBB statistics on zt grid.
Default: none.
</entry>

<entry id="clubb_vars_zm" type="char*16(10000)"  category="history"
       group="clubb_stats_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for CLUBB statistics on zm grid.
Default: none.
</entry>

<entry id="clubb_vars_rad_zt" type="char*16(10000)"  category="history"
       group="clubb_stats_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for CLUBB statistics on radiation zt grid.
Default: none.
</entry>

<entry id="clubb_vars_rad_zm" type="char*16(10000)"  category="history"
       group="clubb_stats_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for CLUBB statistics on radiation zm grid.
Default: none.
</entry>

<entry id="clubb_vars_sfc" type="char*16(10000)"  category="history"
       group="clubb_stats_nl" valid_values="" >
Same as {{ hilight }}fincl1{{ closehilight }}, but for CLUBB statistics on surface.
Default: none.
</entry>

<entry id="collect_column_output" type="logical(10)" category="history"
   group="cam_history_nl" valid_values="">
Collect all column data into a single field and output in ncol format,
much faster than default when you have a lot of columns.
Default: false
</entry>

<entry id="fincl1lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
List of columns or contiguous columns at which the fincl1 fields will be
output. Individual columns are specified as a string using a longitude
degree (greater or equal to 0.) followed by a single character
(e)ast/(w)est identifer, an underscore '_' , and a latitude degree followed
by a single character (n)orth/(s)outh identifier.  For example, '10e_20n'
would pick the model column closest to 10 degrees east longitude by 20
degrees north latitude.  A group of contiguous columns can be specified
using bounding latitudes and longitudes separated by a colon.  For example,
'10e:20e_15n:20n' would select the model columns which fall with in the
longitude range from 10 east to 20 east and the latitude range from 15
north to 20 north.
Default: none
</entry>
<entry id="fincl2lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 2nd history file.
</entry>
<entry id="fincl3lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 3rd history file.
</entry>
<entry id="fincl4lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 4th history file.
</entry>
<entry id="fincl5lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 5th history file.
</entry>
<entry id="fincl6lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 6th history file.
</entry>
<entry id="fincl7lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 7th history file.
</entry>
<entry id="fincl8lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 8th history file.
</entry>
<entry id="fincl9lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 9th history file.
</entry>
<entry id="fincl10lonlat" type="char*128(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Same as {{ hilight }}fincl1lonlat{{ closehilight }}, but for 10th history file.
</entry>

<entry id="fwrtpr1" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 1st history file.
Default: none
</entry>
<entry id="fwrtpr2" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 2nd history file.
Default: none
</entry>
<entry id="fwrtpr3" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 3rd history file.
Default: none
</entry>
<entry id="fwrtpr4" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 4th history file.
Default: none
</entry>
<entry id="fwrtpr5" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 5th history file.
Default: none
</entry>
<entry id="fwrtpr6" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 6th history file.
Default: none
</entry>
<entry id="fwrtpr7" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 7th history file.
Default: none
</entry>
<entry id="fwrtpr8" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 8th history file.
Default: none
</entry>
<entry id="fwrtpr9" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 9th history file.
Default: none
</entry>
<entry id="fwrtpr10" type="char*26(1000)"  category="history"
       group="cam_history_nl" valid_values="" >
Specific fields which will be written using the non-default precision on
the 10th history file.
Default: none
</entry>

<entry id="hfilename_spec" type="char*256(10)"  category="history"
       group="cam_history_nl" valid_values="" >

Array of history filename specifiers.  The filenames of up to six history
output files can be controlled via this variable.  Filename specifiers give
generic formats for the filenames with specific date and time components,
file series number (0-5), and caseid, filled in when the files are
created. The following strings are expanded when the filename is created:
%c=caseid; %t=file series number (0-5); %y=year (normally 4 digits, more
digits if needed); %m=month; %d=day; %s=seconds into current day; %%=%
symbol.  Note that the caseid may be set using the namelist
variable {{ hilight }}case_name{{ closehilight }}.

For example, for a simulation with caseid="test" and current date and time
of 0000-12-31 0:00UT, a filename specifier of "%c.cam2.h%t.%y-%m.nc" would
expand into "test.cam2.h0.0000-12.nc" for the first history file.  The
filename specifier "%c.cam2.h%t.%y-%m-%d-%s.nc" would expand to
"test.cam2.h1.0000-12-31-00000.nc" for the second history file. Spaces are
not allowed in filename specifiers. Although the character "/" is allowed
in the specifier, it will be interpreted as a directory name and the
corresponding directories will have to be created in the model execution
directory (directory given to configure with -cam_exedir option) before
model execution.  The first element is for the primary history file which
is output by default as a monthly history file.  Entries 2 through 6 are
user specified auxilliary output files.

Defaults: "%c.cam2.h0.%y-%m.nc", "%c.cam2.h1.%y-%m-%d-%s.nc", ...,
          "%c.cam2.h5.%y-%m-%d-%s.nc"
</entry>

<entry id="sathist_track_infile" type="char*256" input_pathname="abs" category="history"
       group="satellite_options_nl" valid_values="" >
Full pathname of the satellite track data used by the satellite track history
output feature.
Default: none
</entry>
<entry id="sathist_hfilename_spec" type="char*256"  category="history"
       group="satellite_options_nl" valid_values="" >
Satellite track history filename specifier.  See {{ hilight }}hfilename_spec{{ closehilight }}
Default:  "%c.cam2.sat.%y-%m-%d-%s.nc"
</entry>
<entry id="sathist_fincl" type="char*26(1000)"  category="history"
       group="satellite_options_nl" valid_values="" >
List of history fields to output along the satellite track specified by  {{ hilight }}sathist_track_infile{{ closehilight }}
Default: none
</entry>
<entry id="sathist_mfilt" type="integer"  category="history"
       group="satellite_options_nl" valid_values="" >
Sets the maximum number of observation columns written to the satellite track history file
series.
Default: 100000
</entry>

<entry id="sathist_nclosest" type="integer"  category="history"
       group="satellite_options_nl" valid_values="" >
Sets the number of columns closest to the observation that should be output. Setting
this to a number greater than 1 allows for spatial interpolation in the post processing.
Default: 1
</entry>

<entry id="sathist_ntimestep" type="integer"  category="history"
       group="satellite_options_nl" valid_values="" >
Sets the number of timesteps closest to the observation that should be output. Setting
this to a number greater than 1 allows for temporal interpolation in the post processing.
Default: 1
</entry>

<entry id="inithist" type="char*8"  category="history"
       group="cam_history_nl" valid_values="NONE,6-HOURLY,DAILY,MONTHLY,YEARLY,CAMIOP,ENDOFRUN" >
Frequency that initial files will be output: 6-hourly, daily, monthly,
yearly, or never.  Valid values: 'NONE', '6-HOURLY', 'DAILY', 'MONTHLY',
'YEARLY', 'CAMIOP', 'ENDOFRUN'.
Default: 'YEARLY'
</entry>

<entry id="inithist_all" type="logical"  category="history"
       group="cam_history_nl" valid_values="" >
If false then include only REQUIRED fields on IC file.  If true then
include required AND optional fields on IC file.
Default: FALSE
</entry>

<entry id="mfilt" type="integer(10)"  category="history"
       group="cam_history_nl" valid_values="" >
Array containing the maximum number of time samples written to a history
file.  The first value applies to the primary history file, the second
through tenth to the auxillary history files.
Default: 1,30,30,30,30,30,30,30,30,30
</entry>

<entry id="lcltod_start" type="integer(10)"  category="history"
       group="cam_history_nl" valid_values="" >
Array containing the starting time of day for local time history averaging.
Used in conjuction with lcltod_stop. If lcltod_stop is less than lcltod_start,
then the time range wraps around 24 hours. The start time is included in the
interval. Time is in seconds and defaults to 39600 (11:00 AM).  The first value
applies to the primary hist. file, the second to the first aux. hist. file, etc.
Default: none
</entry>

<entry id="lcltod_stop" type="integer(10)"  category="history"
       group="cam_history_nl" valid_values="" >
Array containing the stopping time of day for local time history averaging.
Used in conjuction with lcltod_start. If lcltod_stop is less than lcltod_start,
then the time range wraps around 24 hours. The stop time is not included in the
interval. Time is in seconds and defaults to 0 (midnight).  The first value
applies to the primary hist. file, the second to the first aux. hist. file, etc.
Default: none
</entry>

<entry id="ndens" type="integer(10)"  category="history"
       group="cam_history_nl" valid_values="1,2" >

Array specifying the precision of real data written to each history file
series. Valid values are 1 or 2. '1' implies output real values are 8-byte
and '2' implies output real values are 4-byte.

Default: 2,2,2,2,2,2,2,2,2,2
</entry>


<entry id="nhtfrq" type="integer(10)"  category="history"
       group="cam_history_nl" valid_values="" >

Array of write frequencies for each history file series.
If {{ hilight }}nhtfrq(1){{ closehilight }} = 0, the file will be a monthly average.
Only the first file series may be a monthly average.  If
{{ hilight }}nhtfrq(i){{ closehilight }} &gt; 0, frequency is specified as number of
timesteps.  If {{ hilight }}nhtfrq(i){{ closehilight }} &lt; 0, frequency is specified
as number of hours.

Default: 0,-24,-24,-24,-24,-24,-24,-24,-24,-24
</entry>

<entry id="interpolate_output" type="logical(10)" category="history"
    group="cam_history_nl" valid_values="">
If interpolate_output(k) = .true., then the k'th history file will be
interpolated to a lat/lon grid before output.
Default: .false.
</entry>

<entry id="interpolate_nlat" type="integer(10)" category="history"
    group="cam_history_nl" valid_values="">
Size of latitude dimension of grid for interpolated output.
If interpolate_nlat and interpolate_nlon are zero, reasonable values
will be chosen by the dycore based on the run resolution.
Default: 0
</entry>

<entry id="interpolate_nlon" type="integer(10)" category="history"
    group="cam_history_nl" valid_values="">
Size of longitude dimension of grid for interpolated output.
If interpolate_nlat and interpolate_nlon are zero, reasonable values
will be chosen by the dycore based on the run resolution.
Default: 0
</entry>

<entry id="interpolate_type" type="integer(10)" category="history"
    group="cam_history_nl" valid_values="0,1">
Selects interpolation method for output on lat/lon grid.
0: Use SE's native high-order method.
1: Use a bilinear method.
Default: 1 (bilinear)
</entry>

<entry id="interpolate_gridtype" type="integer(10)" category="history"
    group="cam_history_nl" valid_values="1,2,3">
Selects output grid type for lat/lon interpolated output.
1: Equally spaced, including poles (FV scalars output grid).
2: Gauss grid (CAM Eulerian).
3: Equally spaced, no poles (FV staggered velocity).
Default: 1
</entry>

<!-- Initial Conditions -->

<entry id="ncdata" type="char*256" input_pathname="abs" category="initial_conditions"
       group="cam_initfiles_nl" valid_values="" >
Full pathname of initial atmospheric state dataset (NetCDF format).
Default: set by build-namelist.
</entry>

<entry id="pertlim" type="real"  category="initial_conditions"
       group="cam_initfiles_nl" valid_values="" >
Perturb the initial conditions for temperature randomly by up to the given
amount. Only applied for initial simulations.
Default: 0.0
</entry>

<entry id="cam_branch_file" type="char*256" category="initial_conditions"
       group="cam_initfiles_nl" valid_values="">
Full pathname of master restart file from which to branch. Setting is
Required for branch run.
Default: none
</entry>

<entry id="readtrace" type="logical"  category="initial_conditions"
       group="constituents_nl" valid_values="" >
If TRUE, try to initialize data for all consituents by reading from the
initial conditions dataset. If variable not found then data will be
initialized using internally-specified default values.  If FALSE then don't
try reading constituent data from the IC file; just use the
internally-specified defaults.
Default: TRUE
</entry>


<!-- COSP Cloud Simulator control LOGICALS -->

<entry id="docosp" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulator is run.
Setting this namelist variable happens automatically if you compile with COSP.
COSP will not run unless this is set to .true. in the namelist!
Turn on the desired simulators using lXXX_sim namelist vars
If no specific simulators are specified, all of the simulators
are run on all columns and all output is saved. (useful for testing).
COSP is available with CAM4, CAM5 and CAM6 physics.
This default logical is set in cospsimulator_intr.F90.
Default: FALSE
</entry>

<entry id="cosp_amwg" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, COSP cloud simulators are run to produce
all output required for the COSP plots in the AMWG diagnostics package.
sets cosp_ncolumns=10 and cosp_nradsteps=3
(appropriate for COSP statistics derived from seasonal averages),
and runs MISR, ISCCP, MODIS, CloudSat radar and CALIPSO lidar simulators
(cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true.,
cosp_lmodis_sim=.true.,cosp_lradar_sim=.true.,cosp_llidar_sim=.true.).
This default logical is set in cospsimulator_intr.F90.
Default: FALSE
</entry>

<entry id="cosp_lite" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulators are run to produce
select output for the AMWG diagnostics package.
sets cosp_ncolumns=10 and cosp_nradsteps=3
(appropriate for COSP statistics derived from seasonal averages),
and runs MISR, ISCCP, MODIS, and CALIPSO lidar simulators
(cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true.,
cosp_lmodis_sim=.true.,cosp_llidar_sim=.true.).
This default logical is set in cospsimulator_intr.F90.
Default: FALSE
</entry>

<entry id="cosp_passive" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the passive COSP cloud simulators are run to produce
select output for the AMWG diagnostics package.
sets cosp_ncolumns=10 and cosp_nradsteps=3
(appropriate for COSP statistics derived from seasonal averages),
and runs MISR, ISCCP, and MODIS simulators
(cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true.,cosp_lmodis_sim=.true.).
This default logical is set in cospsimulator_intr.F90.
Default: FALSE
</entry>

<entry id="cosp_active" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the active COSP cloud simulators are run to produce
select output for the AMWG diagnostics package.
sets cosp_ncolumns=10 and cosp_nradsteps=3
(appropriate for COSP statistics derived from seasonal averages),
and runs CloudSat radar and CALIPSO lidar simulators
(cosp_lradar_sim=.true.,cosp_llidar_sim=.true.).
This default logical is set in cospsimulator_intr.F90.
Default: FALSE
</entry>

<entry id="cosp_isccp" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the ISCCP cloud simulator is run to produce
select output for the AMWG diagnostics package.
sets cosp_ncolumns=10 and cosp_nradsteps=3
(appropriate for COSP statistics derived from seasonal averages),
and runs ISCCP simulator
(cosp_lmisr_sim=.false.,cosp_lisccp_sim=.true.,
cosp_lmodis_sim=.false.,cosp_lradar_sim=.false.,cosp_llidar_sim=.false.).
This default logical is set in cospsimulator_intr.F90.
1236: Default: FALSE
</entry>

<entry id="cosp_runall" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, run all simulators using the default values cosp_ncolumns=50 and
cosp_nradsteps=1.  This option is mainly intended for testing, but it also
must be used in order to output the input fields needed to run the
simulator in an offline mode (via setting cosp_histfile_aux=.true.).
Default: FALSE
</entry>

<entry id="cosp_lradar_sim" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, COSP radar simulator will be run and all non-subcolumn output
will be saved.
Default: FALSE
</entry>

<entry id="cosp_llidar_sim" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, COSP lidar simulator will be run and all non-subcolumn output
will be saved
Default: FALSE
</entry>

<entry id="cosp_lisccp_sim" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, COSP ISCCP simulator will be run and all non-subcolumn output
will be saved.  ISCCP simulator is run on only daylight
columns.
Default: FALSE
</entry>

<entry id="cosp_lmisr_sim" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, MISR simulator will be run and all non-subcolumn output
will be saved.  MISR simulator is run on only daylight
columns.
Default: FALSE
</entry>

<entry id="cosp_lmodis_sim" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, MODIS simulator will be run and all non-subcolumn output
will be saved.

Default: FALSE
</entry>

<!-- COSP CFMIP Cloud Simulator LOGICALS -->

<entry id="cosp_cfmip_3hr" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulator is run for CFMIP 3-hourly
experiments.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<entry id="cosp_cfmip_da" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulator is run for CFMIP daily
experiments.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<entry id="cosp_cfmip_off" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulator is run for CFMIP off-line
monthly experiments.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<entry id="cosp_cfmip_mon" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, the COSP cloud simulator is run for CFMIP monthly
experiments.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<!-- COSP input control parameters -->

<entry id="cosp_ncolumns" type="integer"  category="cosp"
       group="cospsimulator_nl" valid_values="">
Number of subcolumns in SCOPS
This default logical is set in cospsimulator_intr.F90
Default: 50
</entry>

<!-- COSP sampling parameters -->

<entry id="cosp_sample_atrain" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
Turns on sampling along a-train orbit for radar and lidar simulators.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<entry id="cosp_atrainorbitdata" type="char*256"  category="cosp"
       group="cospsimulator_nl" valid_values="">
Full pathname for the Atrain orbit data file.
cosp_atrainorbitdata is requiref if cosp_sample_atrain is TRUE.
Default: NONE
</entry>

<!-- COSP output parameters -->

<entry id="cosp_histfile_num" type="integer"  category="cosp"
       group="cospsimulator_nl" valid_values="">
This specifies the CAM history tape where COSP diagnostics will be written.
Ignored/not used if any of the cosp_cfmip_* namelist variables are invoked.

This default is set in cospsimulator_intr.F90
Default: 1
</entry>
<entry id="cosp_histfile_aux" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
If true, additional output is added to make it possible to
run COSP off-line.

This default is set in cospsimulator_intr.F90
Default: FALSE
</entry>
<entry id="cosp_histfile_aux_num" type="integer"  category="cosp"
       group="cospsimulator_nl" valid_values="">
This specifies the CAM history tape where extra COSP diagnostics will be written.

This default is set in cospsimulator_intr.F90
Default: -1
</entry>

<entry id="cosp_nradsteps" type="integer"  category="cosp"
       group="cospsimulator_nl" valid_values="">
This specifies the frequency at which is COSP is called,
every cosp_nradsteps radiation timestep.

This default is set in cospsimulator_intr.F90
Default: 1
</entry>

<entry id="cosp_lfrac_out" type="logical"  category="cosp"
       group="cospsimulator_nl" valid_values="">
Turns on sub-column output from COSP.
If both the isccp/misr simulators and the lidar/radar simulators
are run, lfrac_out is from the isccp/misr simulators columns.
This default logical is set in cospsimulator_intr.F90
Default: FALSE
</entry>

<!-- Cloud Macro/Micro-physics -->

<entry id="cld_macmic_num_steps" type="integer" category="conv"
       group="phys_ctl_nl" valid_values="" >
Number of macrophysics/microphysics substeps.
Default: 1
</entry>

<!-- Cldwat -->
<entry id="rk_strat_icritc" type="real" category="conv"
       group="rk_stratiform_nl" valid_values="" >
Threshold for autoconversion of cold ice in RK microphysics scheme.
Default: set by build-namelist
</entry>

<entry id="rk_strat_icritw" type="real" category="conv"
       group="rk_stratiform_nl" valid_values="" >
Threshold for autoconversion of warm ice in RK microphysics scheme.
Default: set by build-namelist
</entry>

<entry id="rk_strat_conke" type="real" category="conv"
       group="rk_stratiform_nl" valid_values="" >
Tunable constant for evaporation of precip in RK microphysics scheme.
Default: set by build-namelist
</entry>

<entry id="rk_strat_r3lcrit" type="real" category="conv"
       group="rk_stratiform_nl" valid_values="" >
Critical radius at which autoconversion become efficient in RK microphysics
scheme.
Default: set by build-namelist
</entry>

<entry id="rk_strat_polstrat_rhmin" type="real" category="conv"
       group="rk_stratiform_nl" valid_values="" >
Relative humidity threshold for stratospheric cloud water condensation in RK microphysics
poleward of 50 degrees.
Default: none
</entry>

<!-- macro_park -->
<entry id="macro_park_do_cldice" type="logical" category="conv"
       group="macro_park_nl" valid_values="" >
Switch to control whether Park macrophysics should prognose
cloud ice (cldice).
Default: .true., except for carma=cirrus and carma=carma_dust
</entry>

<entry id="macro_park_do_cldliq" type="logical" category="conv"
       group="macro_park_nl" valid_values="" >
Switch to control whether Park macrophysics should prognose
cloud liquid (cldliq).
Default: .true.
</entry>

<entry id="macro_park_do_detrain" type="logical" category="conv"
       group="macro_park_nl" valid_values="" >
Switch to control whether Park macrophysics should perform
detrainment into the stratiform cloud scheme.
Default: .true., except for carma=cirrus and carma=carma_dust
</entry>

<!-- micro_mg -->

<entry id="micro_mg_version" type="integer" category="microphys"
       group="micro_mg_nl" valid_values="" >
Version number for MG microphysics.  This value is set automatically based
on settings in configure and passed to build-namelist
Default: 1 for CAM5 and 2 for CAM6
</entry>

<entry id="micro_mg_sub_version" type="integer" category="microphys"
       group="micro_mg_nl" valid_values="" >
Sub-version number for MG microphysics
Default: 0
</entry>

<entry id="micro_mg_dcs" type="real" category="microphys"
       group="micro_mg_nl" valid_values="" >
Autoconversion size threshold
Default: set by build-namelist
</entry>

<entry id="micro_mg_do_cldice" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Switch to control whether MG microphysics should prognose
cloud ice (cldice).
Default: .true., except for carma=cirrus and carma=carma_dust
</entry>

<entry id="micro_mg_do_cldliq" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Switch to control whether MG microphysics should prognose
cloud liquid (cldliq).
Default: .true.
</entry>

<entry id="micro_mg_num_steps" type="integer" category="microphys"
       group="micro_mg_nl" valid_values="" >
Number of substeps over MG microphysics.
Default: 1
</entry>

<entry id="micro_mg_precip_frac_method" type="char*16" category="microphys"
       group="micro_mg_nl" valid_values="max_overlap,in_cloud" >
Type of precipitation fraction.
Default: for CLUBB runs =&gt; in_cloud;
             all others =&gt; max_overlap
</entry>

<entry id="micro_mg_berg_eff_factor" type="real" category="microphys"
       group="micro_mg_nl" valid_values="" >
Efficiency factor for berg
Default: 1
</entry>

<entry id="micro_do_sb_physics" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Do Seifert and Behang (2001) autoconversion and accretion physics when set to true.
Default: .false.
</entry>

<entry id="microp_uniform" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Switch to control whether MG microphysics performs a uniform calculation or not
(useful for sub-columns)
Default: .false. unless use_subcol_microp is true
</entry>

<entry id="micro_mg_adjust_cpt" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Switch to control whether MG microphysics should adjust the temperature
at the level containing the cold point tropopause by using the value
obtain by extrapolating between levels.
Default: set by build-namelist
</entry>

<entry id="micro_mg_nccons" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Set .true. to hold cloud droplet number constant.
Default: .false.
</entry>

<entry id="micro_mg_nicons" type="logical" category="microphys"
       group="micro_mg_nl" valid_values="" >
Set .true. to hold cloud ice number constant.
Default: .false.
</entry>

<entry id="micro_mg_ncnst" type="real" category="microphys"
       group="micro_mg_nl" valid_values="" >
In-cloud droplet number concentration when micro_mg_nccons=.true.
Default: 100.e6 m-3
</entry>

<entry id="micro_mg_ninst" type="real" category="microphys"
       group="micro_mg_nl" valid_values="" >
In-cloud ice number concentration when micro_mg_nicons=.true.
Default: 0.1e6 m-3
</entry>

<!-- Aerosol microphysics -->
<entry id="microp_aero_bulk_scale" type="real" category="microphys"
       group="microp_aero_nl" valid_values="" >
prescribed aerosol bulk sulfur scale factor
Default: 2
</entry>

<entry id="use_hetfrz_classnuc" type="logical" category="microphys"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on heterogeneous freezing code.
Default: .false.
</entry>

<entry id="hist_hetfrz_classnuc" type="logical" category="microphys"
       group="hetfrz_classnuc_nl" valid_values="" >
Add diagnostic output for heterogeneous freezing code.
Default: .false.
</entry>

<entry id="hetfrz_aer_scalfac" type="real" category="microphys"
       group="hetfrz_classnuc_nl" valid_values="" >
Scaling factor for aerosols
Default: 0.001
</entry>

<entry id="use_preexisting_ice" type="logical" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Switch to turn on treatment of pre-existing ice in the ice nucleation code.
Default: .false., except .true. for CAM6
</entry>

<entry id="hist_preexisting_ice" type="logical" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Add diagnostics for pre-existing ice option in ice nucleation code to history output.
Default: .false.
</entry>

<entry id="nucleate_ice_subgrid" type="real" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Subgrid scaling factor for relative humidity in ice nucleation code. If it has
a value of -1, then indicates that the subgrid scaling factor will be
calculated on the fly as 1 / qsatfac (i.e. the saturation scaling factor).
Default: set by build-namelist
</entry>

<entry id="nucleate_ice_subgrid_strat" type="real" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Subgrid scaling factor for relative humidity in ice nucleation code in the
stratosphere. If it has a value of -1, then indicates that the subgrid
scaling factor will be calculated on the fly as 1 / qsatfac (i.e. the
saturation scaling factor).
Default: set by build-namelist
</entry>

<entry id="nucleate_ice_incloud" type="logical" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Switch to determine whether ice nucleation happens using the incloud (true) or
the gridbox average (false) relative humidity.  When true, it is assumed that
the incloud relative humidity for nucleation is 1.
Default: .true., except .false. for CAM6
</entry>

<entry id="nucleate_ice_strat" type="real" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Fraction of Aitken mode sulfate particles assumed to nucleate ice in the polar
stratospheric. Provides an increase in homogeneous freezing over the Liu&amp;Penner method.
Temporary solution to adjust ice surface area density and dehydration in the
polar stratosphere where there doesn't seem to be enough nucleation. A value of
zero means Liu&amp;Penner is used.
Default: 1.0
</entry>

<entry id="nucleate_ice_use_troplev" type="logical" category="microphys"
       group="nucleate_ice_nl" valid_values="" >
Indicates whether to use the tropopause level to determine where to adjust
nucleation for the stratosphere (true) or whether to use a hard coded transition
level from 100 to 125 hPa applied only in the polar regions (false).
Default: .true.
</entry>

<!-- Secondary ice production -->
<entry id="rafsip_on" type="logical" category="microphys"
       group="sec_ice_nl" valid_values="" >
  If .true., compute secondary ice production using random forests method.
  Default: .true.
</entry>

<entry id="forestfileALL" type="char*256" input_pathname="abs" category="microphys"
       group="sec_ice_nl" valid_values="" >
  ML parameters for the forestALL RFR model.
  Georgakaki, P., &amp; Nenes, A. (2024).
  RaFSIP: Parameterizing ice multiplication in models using a machine learning
  approach. Journal of Advances in Modeling Earth Systems, 16,
  e2023MS003923.
  https://doi.org/10.1029/2023MS003923
  Default: None
</entry>

<entry id="forestfileBRDS" type="char*256" input_pathname="abs" category="microphys"
       group="sec_ice_nl" valid_values="" >
  ML parameters for the forestBRDS RFR model.
  Georgakaki, P., &amp; Nenes, A. (2024).
  RaFSIP: Parameterizing ice multiplication in models using a machine learning
  approach. Journal of Advances in Modeling Earth Systems, 16,
  e2023MS003923.
  https://doi.org/10.1029/2023MS003923
  Default: None
</entry>

<entry id="forestfileBRHM" type="char*256" input_pathname="abs" category="microphys"
       group="sec_ice_nl" valid_values="" >
  ML parameters for the forestBRHM RFR model.
  Georgakaki, P., &amp; Nenes, A. (2024).
  RaFSIP: Parameterizing ice multiplication in models using a machine learning
  approach. Journal of Advances in Modeling Earth Systems, 16,
  e2023MS003923.
  https://doi.org/10.1029/2023MS003923
  Default: None
</entry>

<entry id="forestfileBR" type="char*256" input_pathname="abs" category="microphys"
       group="sec_ice_nl" valid_values="" >
  ML parameters for the forestBR RFR model.
  Georgakaki, P., &amp; Nenes, A. (2024).
  RaFSIP: Parameterizing ice multiplication in models using a machine learning
  approach. Journal of Advances in Modeling Earth Systems, 16,
  e2023MS003923.
  https://doi.org/10.1029/2023MS003923
  Default: None
</entry>

<entry id="forestfileBRwarm" type="char*256" input_pathname="abs" category="microphys"
       group="sec_ice_nl" valid_values="" >
  ML parameters for the forestBRwarm RFR model.
  Georgakaki, P., &amp; Nenes, A. (2024).
  RaFSIP: Parameterizing ice multiplication in models using a machine learning
  approach. Journal of Advances in Modeling Earth Systems, 16,
  e2023MS003923.
  https://doi.org/10.1029/2023MS003923
  Default: None
</entry>

<!-- Multiplier for Bergeron process -->
<entry id="rafwbf_on" type="logical" category="microphys"
       group="wbf_nl" valid_values="" >
  If .true., compute factor for Bergeron using random forests method.
  Default: .false.
</entry>

<entry id="forestfileWBF" type="char*256" input_pathname="abs" category="microphys"
       group="wbf_nl" valid_values="" >
  ML parameters for Damman et al., in preparation to submission to ACP.
  Default: None
</entry>

<!-- hkconv Moist Convection -->
<entry id="hkconv_cmftau" type="real" category="conv"
       group="hkconv_nl" valid_values="" >
Characteristic adjustment time scale for Hack shallow scheme.
Default: 1800.0
</entry>

<entry id="hkconv_c0" type="real" category="conv"
       group="hkconv_nl" valid_values="" >
Rain water autoconversion coefficient for Hack shallow scheme.
Default: set by build-namelist
</entry>

<!-- uwshcu Moist Convection -->
<entry id="uwshcu_rpen" type="real" category="conv"
       group="uwshcu_nl" valid_values="">
Penetrative entrainment efficiency in UW shallow scheme.
Default: set by build-namelist
</entry>

<!-- Cloud fraction -->

<entry id="cldfrc_freeze_dry" type="logical" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
Switch for Vavrus "freeze dry" adjustment in cloud fraction.  Set to FALSE to
turn the adjustment off.
Default: .true.
</entry>

<entry id="cldfrc_ice" type="logical" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
Switch for ice cloud fraction calculation.
Default: .true. for CAM5 and CAM6, otherwise .false.
</entry>

<entry id="cldfrc_rhminl" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
Minimum rh for low stable clouds.
Default: set by build-namelist
</entry>

<entry id="cldfrc_rhminl_adj_land" type="real" category="conv"
       group="cldfrc_nl" valid_values="" >
Adjustment to rhminl for land without snow cover.
Default: 0.0 for CAM6;
         all others =&gt; 0.10
</entry>

<entry id="cldfrc_rhminh" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
Minimum rh for high stable clouds.
Default: set by build-namelist
</entry>

<entry id="cldfrc_sh1" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
parameter for shallow convection cloud fraction.
Default: set by build-namelist
</entry>

<entry id="cldfrc_sh2" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
parameter for shallow convection cloud fraction.
Default: set by build-namelist
</entry>

<entry id="cldfrc_dp1" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
parameter for deep convection cloud fraction.
Default: set by build-namelist
</entry>

<entry id="cldfrc_dp2" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
parameter for deep convection cloud fraction.
Default: set by build-namelist
</entry>

<entry id="cldfrc_premit" type="real" category="cldfrc"
       group="cldfrc_nl" valid_values="" >
top pressure bound for mid level cloud.
Default: set by build-namelist
</entry>

<entry id="cldfrc_premib" type="real" category="conv"
       group="cldfrc_nl" valid_values="" >
Bottom height (Pa) for mid-level liquid stratus fraction.
Default: 700.e2 for CAM5 and CAM6; all others=&gt; 750.e2
</entry>

<entry id="cldfrc_iceopt" type="integer" category="conv"
       group="cldfrc_nl" valid_values="" >
Scheme for ice cloud fraction: 1=wang &amp; sassen, 2=schiller (iciwc),
3=wood &amp; field, 4=Wilson (based on smith), 5=modified slingo (ssat &amp; empyt cloud)
Default: set by build-namelist
</entry>

<entry id="cldfrc_icecrit" type="real" category="conv"
       group="cldfrc_nl" valid_values="" >
Critical RH for ice clouds (Wilson &amp; Ballard scheme).
Default: set by build-namelist
</entry>

<entry id="cldfrc2m_rhmini" type="real" category="conv"
       group="cldfrc2m_nl" valid_values="" >
Minimum rh for ice cloud fraction &gt; 0.
Default: set by build-namelist
</entry>

<entry id="cldfrc2m_rhmaxi" type="real" category="conv"
       group="cldfrc2m_nl" valid_values="" >
rhi at which ice cloud fraction = 1.
Default: set by build-namelist
</entry>

<entry id="cldfrc2m_rhminis" type="real" category="conv"
       group="cldfrc2m_nl" valid_values="" >
Minimum rh for ice cloud fraction &gt; 0 in the stratosphere.
Default: set by build-namelist
</entry>

<entry id="cldfrc2m_rhmaxis" type="real" category="conv"
       group="cldfrc2m_nl" valid_values="" >
rhi at which ice cloud fraction = 1 in the stratosphere.
Default: set by build-namelist
</entry>

<entry id="cldfrc2m_do_subgrid_growth" type="logical" category="conv"
       group="cldfrc2m_nl" valid_values="" >
Use cloud fraction to determine whether to do growth of ice clouds below
RHice of 1 down to RHice = rhmini.
Default: .true. for CAM6; all others =&gt; .false.
</entry>

<entry id="zmconv_momcu" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Convective momentum transport parameter (upward)
Default: set by build-namelist
</entry>

<entry id="zmconv_momcd" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Convective momentum transport parameter (downward)
Default: set by build-namelist
</entry>

<!-- condensate to rain autoconversion coefficient -->
<entry id="zmconv_c0_lnd" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Autoconversion coefficient over land in ZM deep convection scheme.
Default: set by build-namelist
</entry>

<entry id="zmconv_c0_ocn" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Autoconversion coefficient over ocean in ZM deep convection scheme.
Default: set by build-namelist
</entry>

<entry id="zmconv_ke_lnd" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Tunable evaporation efficiency for land in ZM deep convection scheme.
Default: set by build-namelist
</entry>

<entry id="zmconv_ke" type="real" category="conv"
       group="zmconv_nl" valid_values="" >
Tunable evaporation efficiency in ZM deep convection scheme.
Default: set by build-namelist
</entry>

<entry id="zmconv_org" type="logical" category="conv"
       group="zmconv_nl" valid_values="" >
Include organization parameterization in ZM.   This value is set to true automatically
if -zmconv_org is set in configure.
Default: .false., unless -zmconv_org set in configure
</entry>

<entry id="zmconv_microp" type="logical" category="conv"
       group="zmconv_nl" valid_values="" >
Turn on convective microphysics
Default: .false.
</entry>

<entry id="zmconv_num_cin" type="integer" category="conv"
       group="zmconv_nl" valid_values="" >
The number of negative buoyancy regions that are allowed before the convection top and CAPE calculations are completed.
Default: =&gt; 1 for CAM6;
         =&gt; 5 for all other
</entry>


<!-- Cloud sedimentation -->

<entry id="cldsed_ice_stokes_fac" type="real" category="cldsed"
       group="cldsed_nl" valid_values="" >
Factor applied to the ice fall velocity computed from
Stokes terminal velocity.
Default: set by build-namelist
</entry>

<!-- Water Vapor Saturation -->

<entry id="wv_sat_scheme" type="char*16" category="wv_sat"
       group="wv_sat_nl" valid_values="GoffGratch,MurphyKoop" >
Type of water vapor saturation vapor pressure scheme employed.  'GoffGratch' for
Goff and Gratch (1946); 'MurphyKoop' for Murphy &amp; Koop (2005)
Default: GoffGratch; except MurphyKoop for carma=cirrus or carma=cirrus_dust
</entry>

<!-- Physics sub-column switches -->

<entry id="use_subcol_microp" type="logical" category="conv"
       group="phys_ctl_nl" valid_values="" >
Control use of sub-columns within macro/micro physics;
'false' for no subcolumns.
Default: 'false'
</entry>

<entry id="subcol_scheme" type="char*16" category="conv"
       group="subcol_nl" valid_values="SILHS,CloudObj,tstcp,vamp,off" >
Type of sub-column generator scheme employed.
   'SIHLS'    Sub-columns generated with Latin Hypercube sampling of the CLUBB PDF;
   'CloudObj' Create sub-columns where most water is assigned to cloud sub-columns;
   'tstcp'    testing;
   'vamp'     Variation Across Microphysics Profiles simple deterministic scheme;
   'off'      None
Default: 'off'
</entry>

<entry id="subcol_tstcp_noAvg" type="logical" category="conv"
       group="subcol_tstcp_nl" valid_values="" >
Turns off averaging and assigns first subcolumn back to grid.  Needed for BFB comparisons
'true' for no averaging.
Default: '.false.'
</entry>

<entry id="subcol_tstcp_filter" type="logical" category="conv"
       group="subcol_tstcp_nl" valid_values="" >
Turns on/off filtering during averaing in tstcp
'true' to use filtering.
Default: '.false.'
</entry>

<entry id="subcol_tstcp_weight" type="logical" category="conv"
       group="subcol_tstcp_nl" valid_values="" >
Turns on/off use of weights during averaging in tstcp
'true' to use weights.
Default: '.false.'
</entry>

<entry id="subcol_tstcp_perturb" type="logical" category="conv"
       group="subcol_tstcp_nl" valid_values="" >
Perturbs the temperatures in state after copying for testing purposes
'true' to perturb temperatures.
Default: '.false.'
</entry>

<entry id="subcol_tstcp_restart" type="logical" category="conv"
       group="subcol_tstcp_nl" valid_values="" >
Tests the restart capabilities of weights with a more adequate test
'true' to set the weights to a slightly more complicated pattern for restart testing
Default: '.false.'
</entry>

<entry id="subcol_silhs_weight" type="logical" category="conv"
       group="subcol_silhs_nl" valid_values="" >
Turns on/off use of weights during averaging in tstcp
'true' to use weights.
Default: '.true.'
</entry>

<entry id="subcol_silhs_numsubcol" type="integer" category="conv"
       group="subcol_silhs_nl" valid_values="" >
Number of subcolumns/samples to use in this simulation. Must be less than psubcols.
Default: 4
</entry>

<!-- VAMP Sub-Column Generator -->

<entry id="subcol_vamp_ctyp" type="integer" category="conv"
       group="subcol_vamp_nl" valid_values="" >
Type of condensate to assume in VAMP Generator
1 Uniform Condensate
2 Variable Condensate Uniform Number
3 Variable Condensate Variable Number
Default: 3
</entry>

<entry id="subcol_vamp_otyp" type="integer" category="conv"
       group="subcol_vamp_nl" valid_values="" >
Type of overlap to assume in VAMP Generator 1 Maximum
Default: 1
</entry>

<entry id="subcol_vamp_nsubc" type="integer" category="conv"
       group="subcol_vamp_nl" valid_values="" >
Number of subcolumns in VAMP Generator
Default: 10
</entry>



<!-- Moist Convection and Microphysics -->

<entry id="deep_scheme" type="char*16" category="conv"
       group="phys_ctl_nl" valid_values="ZM,UNICON,off,CLUBB_SGS" >
Type of deep convection scheme employed.  'ZM' for Zhang-McFarlane;
'off' for none; or 'UNICON' which doesn't distinquish shallow and deep.
Default: 'ZM' unless using 'UNICON', 'SPCAM' or 'pbl=none'
</entry>

<entry id="microp_scheme" type="char*16" category="conv"
       group="phys_ctl_nl" valid_values="RK,MG,SPCAM_m2005,SPCAM_sam1mom" >
Type of microphysics scheme employed.  'RK' for Rasch and Kristjansson
(1998); 'MG' for Morrison and Gettelman (2008), Gettelman et al (2010)
two moment scheme for CAM5 and CAM6
SPCAM has two different microphysics schemes: SPCAM_m2005 (Morrison et al 2005),
SPCAM_sam1mom (Khairoutinov 2003)
Default: set by build-namelist (depends on value set in configure).
</entry>

<entry id="macrop_scheme" type="char*16" category="conv"
       group="phys_ctl_nl" valid_values="park,RK,CLUBB_SGS" >
Type of macrophysics scheme employed.  'park' for Park
(1998); 'RK' for Rasch and Kristjansson (1998); 'CLUBB_SGS' clubb.
Default: set by build-namelist
</entry>

<entry id="do_clubb_sgs" type="logical" category="conv"
       group="phys_ctl_nl" valid_values="" >
Switch for CLUBB_SGS
Default: set by build-namelist
</entry>

<entry id="shallow_scheme" type="char*16" category="conv"
       group="phys_ctl_nl" valid_values="Hack,UW,CLUBB_SGS,UNICON,SPCAM_m2005,SPCAM_sam1mom" >
Type of shallow convection scheme employed.
 'Hack' for Hack shallow convection;
 'UW' for original McCaa UW pbl scheme, modified by Sungsu Park;
 'CLUBB_SGS' for CLUBB_SGS
 'UNICON' which doesn't distinquish shallow and deep.
 'SPCAM_m2005' for SPCAM double moment
 'SPCAM_sam1mom' for SPCAM single moment
Default: set by build-namelist (depends on {{ hilight }}eddy_scheme{{ closehilight }}).
</entry>

<entry id="do_beljaars" type="logical" category="pbl"
       group="blj_nl" valid_values="" >
Logical switch to turn on the beljaars scheme
Default: set by build-namelist
</entry>

<entry id="do_tms" type="logical" category="pbl"
       group="tms_nl" valid_values="" >
Logical switch to turn on turbulent mountain stress calculation in
vertical diffusion routine.
Default: set by build-namelist
</entry>

<entry id="tms_orocnst" type="real" category="pbl"
       group="tms_nl" valid_values="" >
Turbulent mountain stress parameter used when turbulent mountain stress calculation
is turned on. See {{ hilight }}do_tms{{ closehilight }}.
Default: 1.0 for CAM, set by build-namelist for WACCM, T31
</entry>

<entry id="tms_z0fac" type="real" category="pbl"
       group="tms_nl" valid_values="" >
Factor determining z_0 from orographic standard deviation [ no unit ]
Used when turbulent mountain stress calc is turned on. See {{ hilight }}do_tms{{ closehilight }}.
Default: set by build-namelist for WACCM, T31
</entry>

<entry id="eddy_lbulk_max" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Maximum master length scale designed to address issues in diag_TKE outside the
boundary layer.
In order not to disturb turbulence characteristics in the lower troposphere,
this should be set at least larger than a few km. However, this does not
significantly improve the values outside of the boundary layer. Smaller values
make some improvement, but it is also noisy. Better results are seen using
eddy_leng_max or kv_freetrop_scale.
Default: 40.e3 (m)
</entry>

<entry id="eddy_leng_max" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Maximum dissipation length scale designed to address issues with diag_TKE outside
the boundary layer, where the default value generates large diffusivities. A value
of 30 m is consistent with the length scales used in the HB scheme; however, this
will also reduce value in the boundary layer.
Default: 40.e3 (m)
</entry>

<entry id="eddy_max_bot_pressure" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Bottom pressure level at which namelist values for eddy_leng_max and
eddy_lbulk_max are applied. Default values are used at lower levels (i.e. the
boundary layer).
Default: 100.e3 (hPa)
</entry>

<entry id="eddy_moist_entrain_a2l" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Moist entrainment enhancement parameter.
Default: set by build-namelist
</entry>

<entry id="kv_top_pressure" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Pressure (Pa) that defined the upper atmosphere for adjustment of
eddy diffusivities from diag_TKE using kv_top_scale.
Default: 0.
</entry>

<entry id="kv_top_scale" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Scaling factor that is applied (multiplied) to the eddy diffusivities
in the upper atmosphere (see kv_top_pressure).
Default: 1.0
</entry>

<entry id="kv_freetrop_scale" type="real" category="pbl"
       group="eddy_diff_nl" valid_values="" >
Scaling factor that is applied (multiplied) to the eddy diffusivities
in the free troposphere (boundary layer to kv_top_pressure)
Default: 1.0
</entry>

<entry id="diff_cnsrv_mass_check" type="logical" category="pbl"
       group="vert_diff_nl" valid_values="" >
Perform mass conservation check on eddy diffusion operation.
Default: FALSE
</entry>

<entry id="do_iss" type="logical" category="pbl"
       group="vert_diff_nl" valid_values="" >
Logical switch to turn on implicit turbulent surface stress calculation in
diffusion solver routine.
Default: set by build-namelist
</entry>

<entry id="unicon_offline_dat_out" type="logical"  category="diagnostics"
       group="unicon_nl" valid_values="" >
Produce output for the offline unicon driver.
Default: .false.
</entry>

<entry id="unicon_offline_dat_hfile" type="integer"  category="diagnostics"
       group="unicon_nl" valid_values="" >
History file number for offline unicon driver output.
Default: 2 (i.e., h1 history file)
</entry>

<entry id="clubb_cloudtop_cooling" type="logical"  category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
Apply cloud top radiative cooling parameterization
Default: .false.
</entry>

<entry id="clubb_rainevap_turb" type="logical"  category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
Include effects of precip evaporation on turbulent moments
Default: .false.
</entry>

<entry id="clubb_expldiff" type="logical"  category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
Explicit diffusion on temperature and moisture when CLUBB is on
Default: .false.
</entry>

<entry id="clubb_stabcorrect" type="logical"  category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
CLUBB do explicit diffusion with a stability correction
Default: .false.
</entry>

<!-- Clubb timestep -->
<entry id="clubb_timestep" type="real" category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
CLUBB timestep.
Default: set by build-namelist
</entry>

<entry id="clubb_rnevap_effic" type="real" category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
Rain evaporation efficiency factor.
Default: set by build-namelist
</entry>

<entry id="clubb_do_adv" type="logical" category="pblrad"
       group="clubbpbl_diff_nl" valid_values="" >
Switch for CLUBB_ADV
Default: FALSE
</entry>

<!-- CLUBB parameters -->
<entry id="clubb_c11" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Low Skewness in C11 Skw. Function
Default: 0.7D0
</entry>

<entry id="clubb_c11b" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
High Skewness in C11 Skw. Function
Default: 0.35D0
</entry>

<entry id="clubb_c14" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Constant for u'^2 and v'^2 terms
Default: 2.2D0
</entry>

<entry id="clubb_mult_coef" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Coef. applied to log(avg dz/thresh)
Default: 1.0D0
</entry>

<entry id="clubb_gamma_coef" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Low Skw.: gamma coef. Skw. Fnct.
Default: 0.308
</entry>

<entry id="clubb_c_K10" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Momentum coefficient of Kh_zm
Default: 0.5
</entry>

<entry id="clubb_c_K10h" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Thermo of Kh_zm
Default: 0.3
</entry>

<entry id="clubb_beta" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Plume widths for theta_l and rt
Default: 2.4
</entry>

<entry id="clubb_C2rt" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
C2 coef. for the rtp2_dp1 term
Default: 1.0
</entry>

<entry id="clubb_C2thl" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
C2 coef. for the thlp2_dp1 term
Default: 1.0
</entry>

<entry id="clubb_C2rtthl" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
C2 coef. for the rtpthlp_dp1 term
Default: 1.3
</entry>

<entry id="clubb_C8" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Coef. #1 in C8 Skewness Equation
Default: 4.2
</entry>

<entry id="clubb_C7" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Low Skewness in C7 Skw. Function
Default: 0.5
</entry>

<entry id="clubb_C7b" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
High Skewness in C7 Skw. Function
Default: 0.5
</entry>

<entry id="clubb_Skw_denom_coef" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Factor to decrease sensitivity in the denominator of Skw calculation
Default: 0.0
</entry>

<entry id="clubb_lambda0_stability_coef" type="real" category="pblrad"
       group="clubb_params_nl" valid_values="">
Intensity of stability correction applied to C1 and C6
Default: 0.04
</entry>

<entry id="clubb_l_lscale_plume_centered" type="logical" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Uses PDF to compute perturbed values for l_avg_Lscale code
Default: .false.
</entry>

<entry id="clubb_l_use_ice_latent" type="logical" category="pblrad"
       group="clubb_params_nl" valid_values="" >
Include the effects of ice latent heating in turbulence terms
Default: .false.
</entry>

<entry id="clubb_do_liqsupersat" type="logical"  category="conv"
       group="clubb_params_nl" valid_values="" >
Apply liquid supersaturation adjustment code
Default: false
</entry>

<entry id="clubb_do_energyfix" type="logical"  category="conv"
       group="clubb_params_nl" valid_values="" >
Apply adjustments to dry static energy so that CLUBB conserves
energy.
Default: true
</entry>

<!-- CLUBB NorESM options -->
<entry id="clubb_meltpt_temp" type="real" category="NorESM"
       group="clubb_noresm_nl" valid_values="">
Temperature used for the melting temp of ice crystals [K]
Default: 268.15K
</entry>

<entry id="clubb_dt_low" type="real" category="NorESM"
       group="clubb_noresm_nl" valid_values="">
Temperature at which detrained water is classified as entirely ice (no
liquid) in the CLUBB parameterization in units of (K).
Default: 238.15K
</entry>

<!-- CARMA Sectional Microphysics -->

<entry id="carma_model" type="char*32" category="carma"
       group="carma_nl" valid_values="" >
The name of the active CARMA microphysics model or none when CARMA
is not active.
Default: none
</entry>

<entry id="carma_conmax" type="real" category="carma"
       group="carma_nl" valid_values="" >
A fraction that scales how tight the convergence criteria are to
determine that the substepping has resulted in a valid solution.
Smaller values will force more substepping.
CARMA particles.
Default: 0.1
</entry>

<entry id="carma_dt_threshold" type="real" category="carma"
       group="carma_nl" valid_values="" >
When non-zero, the largest change in temperature (K)
allowed per substep.
Default: 0.
</entry>

<entry id="carma_do_aerosol" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the CARMA model is an aerosol model, and
should be called in tphysac.
Default: TRUE
</entry>

<entry id="carma_do_cldice" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA is a cloud ice model and should
be called in tphysbc.
Default: FALSE
</entry>

<entry id="carma_do_cldliq" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA is a cloud liquid model and should
be called in tphysbc.
Default: FALSE
</entry>

<entry id="carma_do_clearsky" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA should do clear sky calculations for
particles that are not part of a cloud in addition to doing a
separate calculation for incloud particles. Only valid when
carma_do_incloud is true.
Default: FALSE
</entry>

<entry id="carma_do_coag" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating whether the coagulation process is enabled for
CARMA particles.
Default: FALSE
</entry>

<entry id="carma_do_detrain" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA is responsible for detrain condensate
from convection into the model.
Default: FALSE
</entry>

<entry id="carma_do_drydep" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the dry deposition process is enabled for
CARMA particles.
Default: FALSE
</entry>

<entry id="carma_do_emission" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the emission of particles is enabled for
CARMA.
Default: FALSE
</entry>

<entry id="carma_do_explised" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that sedimentation should be calculated using an
explicit technique where the substepping is used to keep the CFL
condition from being violated rather than the default PPM scheme.
Default: FALSE
</entry>

<entry id="carma_do_fixedinit" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating CARMA coefficients should only be initialized once from
a fixed temperature profile rather than recomputed for each column. This
improves performance, but reduces accuracy. By default the temperature
profile used is calculated as the average of the initial condition file,
but a predefined profile can be provided.
Default: FALSE
</entry>

<entry id="carma_do_partialinit" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating used in cunjunction with carma_do_fixedinit to indicate
that only the coagulation coefficients should only be initialized from
a fixed temperature profile and all other coeeficients will be recalculated.
Coagulation is the slowest initialization, so this improves performance while
still retaining accuracy for most processes.
Default: FALSE
</entry>

<entry id="carma_do_grow" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the condensational growth process is enabled for
CARMA particles.
Default: FALSE
</entry>

<entry id="carma_rad_feedback" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA sulfate mass mixing ratio will be used
in radiation calculation.
Default: FALSE
</entry>

<entry id="carma_hetchem_feedback" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA sulfate surface area density will be used
in heterogeneous chemistry rate calculation.
Default: FALSE
</entry>

<entry id="carma_do_incloud" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that CARMA should treat cloud particles as incloud
rather than gridbox average calculations.
Default: FALSE
</entry>

<entry id="carma_do_optics" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that carma should generate optical properties files
for the CAM radiation code.
Default: FALSE
</entry>

<entry id="carma_do_pheat" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that particle heating will be used for the condensational
growth process.
Default: FALSE
</entry>

<entry id="carma_do_pheatatm" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that particle heating will affect the atmospheric
temperature.
Default: FALSE
</entry>

<entry id="carma_do_substep" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that substepping will be used for the condensational
growth process.
Default: FALSE
</entry>

<entry id="carma_do_thermo" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that changes in heating will be calculated as a result
CARMA processes and will affect the CAM heating tendency.
Default: FALSE
</entry>

<entry id="carma_do_wetdep" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the wet deposition process is enabled for
CARMA particles.
Default: FALSE
</entry>

<entry id="carma_do_vdiff" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the effect of Brownian diffusion will be calculated for
CARMA particles. NOTE: This needs to be used in conjunction with CARMA
sedimentation.
Default: FALSE
</entry>

<entry id="carma_do_vtran" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating that the sedimentation process is enabled for
CARMA particles.
Default: FALSE
</entry>

<entry id="carma_flag" type="logical" category="carma"
       group="carma_nl" valid_values="" >
Flag indicating whether CARMA is enabled. If CARMA has been included
in the build (configure -carma with something other than none), then
this will cause all of the CARMA constituents and field names to be
registered, but no other CARMA process will be preformed. This overrides
the individual CARMA process flags.
Default: FALSE
</entry>

<entry id="carma_maxretries" type="integer" category="carma"
       group="carma_nl" valid_values="" >
Specifies the maximum number of retry attempts to be used when
condensational growth requires substepping, but the original estimate
for the amount of substepping was insufficient.
Default: 8
</entry>

<entry id="carma_maxsubsteps" type="integer" category="carma"
       group="carma_nl" valid_values="" >
Specifies the maximum number of substeps that could be used for the
first guess when condensational growth requires substepping.
Default: 1
</entry>

<entry id="carma_reftfile" type="char*256" category="carma"
       group="carma_nl" valid_values="" >
Specifies the name of the reference temperature file that will be
used (and created if necessary)  for initialization of CARMA to a
fixed temperature profile.
Default: carma_reft.nc
</entry>

<entry id="carma_cstick" type="real" category="carma"
       group="carma_nl" valid_values="" >
Accommodation coefficient for coagulation.
Default: 1.0
</entry>

<entry id="carma_gsticki" type="real" category="carma"
       group="carma_nl" valid_values="" >
Accommodation coefficient for growth with ice.
Default: 0.93
</entry>

<entry id="carma_gstickl" type="real" category="carma"
       group="carma_nl" valid_values="" >
Accommodation coefficient for growth with liquid.
Default: 1.0
</entry>

<entry id="carma_tstick" type="real" category="carma"
       group="carma_nl" valid_values="" >
Accommodation coefficient for temperature.
Default: 1.0
</entry>

<entry id="carma_rhcrit" type="real" category="carma"
       group="carma_nl" valid_values="" >
Critical relative humidity for liquid cloud formation, used
for sub-grid scale in-cloud saturation.
Default: 1.0
</entry>

<!-- CARMA model - meteor impact -->

<entry id="carma_emis_dust" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Global mass of dust emission for the event.
Default: 0. (kg)
</entry>

<entry id="carma_emis_soot" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Global mass of dust emission for the event.
Default: 0. (kg)
</entry>

<entry id="carma_emis_startdate" type="integer" category="carma_model"
       group="carma_model_nl" valid_values="" >
Starting date for emissions in the form of (yyyyddd) where yyyy is a year and
ddd is a day of year.
Default: 1 (yyyyddd)
</entry>

<entry id="carma_emis_starttime" type="integer" category="carma_model"
       group="carma_model_nl" valid_values="" >
Starting time for the emission event in GMT.
Default: 0. (s Z)
</entry>

<entry id="carma_emis_stopdate" type="integer" category="carma_model"
       group="carma_model_nl" valid_values="" >
Stopping date for emissions in the form of (yyyyddd) where yyyy is a year and
ddd is a day of year.
Default: 1 (yyyyddd)
</entry>

<entry id="carma_emis_stoptime" type="integer" category="carma_model"
       group="carma_model_nl" valid_values="" >
Stoping time for the emission event in GMT.
Default: 0. (s)
</entry>

<entry id="carma_emis_minlat" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Minimum latitude of the area for emssions from the event.
Default: -90. (degrees north)
</entry>

<entry id="carma_emis_maxlat" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Maximum latitude of the area for emssions from the event.
Default: 90. (degrees north)
</entry>

<entry id="carma_emis_minlon" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Minimum longitude of the area for emssions from the event.
Default: 0. (degrees east)
</entry>

<entry id="carma_emis_maxlon" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
Maximum longitude of the area for emssions from the event.
Default: 360. (degrees east)
</entry>

<entry id="carma_fractal_soot" type="logical" category="carma_model"
       group="carma_model_nl" valid_values="" >
Are the soot particles treated as fractals?
Default: FALSE
</entry>

<!-- CARMA model - meteor smoke &amp; pmc -->

<entry id="carma_do_escale" type="logical" category="carma_model"
       group="carma_model_nl" valid_values="" >
Flag indicating that meteor smoke emission will be scaled by a
global relative flux based upon the carma_escale_file.
Default: FALSE
</entry>

<entry id="carma_emis_total" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
The total meteor smoke emission rate in kt/year. The flux will be
scaled to total that value.
Default: 16.0
</entry>

<entry id="carma_emis_file" type="char*256" input_pathname="abs" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the name of the file containing the meteor smoke emission
(ablation) profile.
Default: set by build-namelist.
</entry>

<entry id="carma_escale_file" type="char*256" input_pathname="abs" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the name of the file containing the global realtive flux
specification.
Default: set by build-namelist.
</entry>

<entry id="carma_launch_doy" type="integer" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the day of year when tracers will start being emitted for the tracer test.
Default: 1
</entry>

<entry id="carma_emission_rate" type="real" category="carma_model"
       group="carma_model_nl" valid_values="" >
The emission rate of inert tracers used in the test. A positive value indicates that
the rate is a column mass (kg/m2/s) and a negative value indicate that it is a mass
mixing ratio (kg/kg/s).
Default: 1e-9
</entry>

<entry id="carma_neutral_h2so4" type="logical" category="carma_model"
       group="carma_model_nl" valid_values="" >
Flag indicating that h2so4 vapor pressures should be calculated as if they were
over sulfates that have been totally neutralized.
Default: FALSE
</entry>


<!-- CARMA model - cirrus -->

<entry id="carma_sulfate_method" type="char*32" category="carma_model"
       group="carma_model_nl" valid_values="bulk,carma,fixed,modal" >
Specifies the method to use to get the prescribed sulfate aerosols for use with nucleation
of cirrus clouds. This can be different than the sulfate aerosols that are used with the
climate.
Default: fixed
</entry>

<!-- CARMA model - cirrus &amp; pmc -->

<entry id="carma_mice_file" type="char*256" input_pathname="abs" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the name of the file containing ice refrative indicies as a function of wavelength
used for the particle heating calculation.
Default: set by build-namelist.
</entry>

<!-- CARMA model - dust -->

<entry id="carma_soilerosion_file" type="char*256" input_pathname="abs" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the name of the file containing soil erosion factors. This is used by
the dust model.
Default: set by build-namelist.
</entry>


<!-- CARMA model - sea salt -->

<entry id="carma_do_WeibullK" type="logical" category="carma_model"
       group="carma_model_nl" valid_values="" >
Flag indicating that a calculated Weibull K should be used.
Default: FALSE
</entry>

<entry id="carma_seasalt_emis" type="char*32" category="carma_model"
       group="carma_model_nl" valid_values="" >
Specifies the name of the sea salt emission parameterization.
Default: Gong
</entry>


=======
<!-- Ozone: Data (original CAM version) -->

<entry id="bndtvo" type="char*256" input_pathname="abs" category="o3_data_cam"
       group="cam3_ozone_data_nl" valid_values="" >
Full pathname of time-variant ozone mixing ratio boundary dataset.
Default: set by build-namelist.
</entry>

<entry id="cam3_ozone_data_on" type="logical"  category="o3_data_cam"
       group="cam3_ozone_data_nl" valid_values="" >
Add CAM3 prescribed ozone to the physics buffer.
Default: FALSE
</entry>

<entry id="ozncyc" type="logical"  category="o3_data_cam"
       group="cam3_ozone_data_nl" valid_values="" >
Flag for yearly cycling of ozone data. If set to FALSE, a multi-year
dataset is assumed, otherwise a single-year dataset is assumed, and ozone
will be cycled over the 12 monthly averages in the file.
Default: TRUE
</entry>

<!-- Performance Tuning and Profiling -->

<entry id="papi_ctr1_str" type="char*16"  category="performance"
       group="papi_inparm" valid_values="">
String identifying a hardware counter to the papi library.
Default: PAPI_TOT_CYC
</entry>

<entry id="papi_ctr2_str" type="char*16"  category="performance"
       group="papi_inparm" valid_values="">
String identifying a hardware counter to the papi library.
Default: PAPI_FP_OPS
</entry>

<entry id="papi_ctr3_str" type="char*16"  category="performance"
       group="papi_inparm" valid_values="">
String identifying a hardware counter to the papi library.
Default: PAPI_FP_INS
</entry>

<entry id="papi_ctr4_str" type="char*16"  category="performance"
       group="papi_inparm" valid_values="">
String identifying a hardware counter to the papi library.
Default: PAPI_NO_CTR
</entry>

<entry id="profile_barrier" type="logical"  category="performance"
       group="prof_inparm" valid_values="">
Flag indicating whether the mpi_barrier in t_barrierf should be called.
Default: FALSE
</entry>

<entry id="profile_depth_limit" type="integer"  category="performance"
       group="prof_inparm" valid_values="">
Maximum number of levels of timer nesting .
Default: 99999
</entry>

<entry id="profile_detail_limit" type="integer"  category="performance"
       group="prof_inparm" valid_values="">
Maximum detail level to profile.
Default: 1
</entry>

<entry id="profile_disable" type="logical"  category="performance"
       group="prof_inparm" valid_values="">
Flag indicating whether timers are disabled.
Default: FALSE
</entry>

<entry id="profile_global_stats" type="logical"  category="performance"
       group="prof_inparm" valid_values="">
Collect and print out global performance statistics (for this component communicator).
Default: FALSE
</entry>

<entry id="profile_outpe_num" type="integer"  category="performance"
       group="prof_inparm" valid_values="">
Maximum number of processes writing out timing data (for this component communicator).
Default: -1
</entry>

<entry id="profile_outpe_stride" type="integer"  category="performance"
       group="prof_inparm" valid_values="">
Separation between process ids for processes that are writing out timing data
(for this component communicator).
Default: 1
</entry>

<entry id="profile_papi_enable" type="logical"  category="performance"
       group="prof_inparm" valid_values="">
Flag indicating whether the PAPI namelist should be read and HW performance counters
used in profiling.
Default: FALSE
</entry>

<entry id="profile_single_file" type="logical"  category="performance"
       group="prof_inparm" valid_values="">
Flag indicating whether the performance timer output should be written to a
single file (per component communicator) or to a separate file for each
process.
Default: TRUE
</entry>

<entry id="profile_timer" type="integer"  category="performance"
       group="prof_inparm" valid_values="">
Initialization of GPTL timing library.
Default: GPTLmpiwtime
</entry>

<entry id="swap_comm_protocol" type="integer"  category="performance"
       group="spmd_utils_nl" valid_values="">
Swap communication protocol option (reduced set):
 3, 5:                  nonblocking send
 2, 3, 4, 5:            nonblocking receive
 4, 5:                  ready send
Default: 4
</entry>

<entry id="swap_comm_maxreq" type="integer"  category="performance"
       group="spmd_utils_nl" valid_values="">
Swap communication maximum request count:
 &lt;=0: do not limit number of outstanding send/receive requests
  &gt;0: do not allow more than swap_comm_maxreq outstanding
      nonblocking send requests or nonblocking receive requests
Default: 128
</entry>

<entry id="fc_gather_flow_cntl" type="integer"  category="performance"
       group="spmd_utils_nl" valid_values="">
fc_gather flow control option:
 &lt; 0 : use MPI_Gather
 &gt;= 0: use point-to-point with handshaking messages and preposting
       receive requests up to
         max(min(1,fc_gather_flow_cntl),max_gather_block_size)
       ahead. Default value is defined by private parameter
       max_gather_block_size, which is currently set to 64.
Default: 64
</entry>

<!-- Physics Buffer -->

<entry id="pbuf_global_allocate" type="logical" category="pbuf"
       group="pbuf_nl" valid_values="" >
Allocate all buffers as global.  This is a performance optimization on
machines for which allocation/deallocation of physpkg scope buffers on
every timestep was slow (Cray-X1).
Default: TRUE
</entry>

<!-- Physics control -->

<entry id="cam_physpkg" type="char*16" category="build"
       group="phys_ctl_nl" valid_values="cam3,cam4,cam5,cam6,adiabatic,held_suarez,kessler" >
Name of the CAM physics package.  N.B. this variable may not be set by
the user.  It is set by build-namelist via information in the configure
cache file to be consistent with how CAM was built.
Default: set by build-namelist
</entry>

<entry id="use_simple_phys" type="logical" category="build"
       group="phys_ctl_nl" valid_values="" >
Flag for simple physics package.  N.B. this variable may not be set by
the user.  It is set by build-namelist via information in the configure
cache file to be consistent with how CAM was built.
Default: set by build-namelist
</entry>

<entry id="cam_chempkg" type="char*32" category="build"
       group="phys_ctl_nl" valid_values="trop_mam3,trop_mam4,trop_mam7,trop_mozart,trop_strat_mam4_vbs,trop_strat_mam4_vbsext,
                                         waccm_ma,waccm_mad_mam4,waccm_ma_mam4,waccm_ma_sulfur,waccm_sc,waccm_sc_mam4,waccm_tsmlt_mam4,
                                         terminator,trop_mam_oslo,none" >
Name of the CAM chemistry package.  N.B. this variable may not be set by
the user.  It is set by build-namelist via information in the configure
cache file to be consistent with how CAM was built.
Default: set by build-namelist
</entry>

<entry id="waccmx_opt" type="char*16" category="waccmx"
       group="phys_ctl_nl" valid_values="ionosphere,neutral,off" >
Runtime options of upper thermosphere WACCM-X.  'ionosphere' for
full ionosphere and neutral thermosphere, 'neutral' for just
neutral thermosphere, and off for no WACCM-X.
Default: 'off'
</entry>

<entry id="oplus_adiff_limiter" type="real" category="waccmx"
       group="ionosphere_nl" valid_values="" >
Limiter for ambipolar diffusion coefficient used in O+ transport in the
ionosphere.
Default: 1.5e+8
</entry>

<entry id="oplus_shapiro_const" type="real" category="waccmx"
       group="ionosphere_nl" valid_values="" >
Shapiro constant for spatial smoother used in O+ transport in the
ionosphere.
Default: 0.03
</entry>

<entry id="oplus_enforce_floor" type="logical"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Switch to apply floor to O+ concentrations within in ionosphere O+ transport.
Default: TRUE
</entry>

<entry id="ionos_xport_active" type="logical"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Switch to to turn on/off O+ transport in ionosphere.
Default: set by build-namelist
</entry>

<entry id="ionos_xport_nsplit" type="integer"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Number of ion transport steps per physics timestep.
Default: 5
</entry>

<entry id="ionos_edyn_active" type="logical"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Switch to invoke electro-dynamo to compute ion drift velocities used in
O+ transport in ionosphere.  If false, ExB empirical model is used to
provide the ion drift velocities for O+ transport.
Default: set by build-namelist
</entry>

<entry id="ionos_epotential_model" type="char*16"  category="waccmx"
       group="ionosphere_nl" valid_values="heelis,weimer">
Electric potential model used in the waccmx ionosphere.
Default: set by build-namelist
</entry>

<entry id="ionos_epotential_amie" type="logical"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Give the user the ability to input prescribed high-latitude electric potential.
Default: FALSE
</entry>

<entry id="epot_crit_colats" type="real*2"  category="waccmx"
       group="ionosphere_nl" valid_values="">
Co-latitudes (degrees) of the critical angles where the ionosphere
high-latitude electric potential is merged with the low and middle
latitude electric potential computed by the electro-dynamo of WACCM-X.
Default: none
</entry>

<entry id="wei05_coefs_file" type="char*256" input_pathname="abs" category="waccmx"
       group="ionosphere_nl" valid_values="" >
Full pathname of dataset for coefficient data used in Weimer05
high latitude electric potential model.
Default: set by build-namelist.
</entry>

<entry id="amienh_file" type="char*256" input_pathname="abs" category="waccmx"
       group="ionosphere_nl" valid_values="" >
Full pathname of AMIE inputs for northern hemisphere.
Default: NONE.
</entry>

<entry id="amiesh_file" type="char*256" input_pathname="abs" category="waccmx"
       group="ionosphere_nl" valid_values="" >
Full pathname of AMIE inputs for southern hemisphere.
Default: NONE.
</entry>

<!-- Hydrostatic pressure work in mass adjustment -->

<entry id="dme_energy_adjust" type="logical"  category="NorESM"
       group="phys_ctl_nl" valid_values="" >
Switch to use appropriate energy adjustment in dry-mass adjustment at the
end of tphysac.
Default: .false.
</entry>

<!-- Reference Pressures -->

<entry id="trop_cloud_top_press" type="real" category="press_lim"
       group="ref_pres_nl" valid_values="" >
Troposphere cloud physics will be done only below the top defined
by this pressure (Pa).
Default: set by build-namelist
</entry>

<entry id="clim_modal_aero_top_press" type="real" category="press_lim"
       group="ref_pres_nl" valid_values="" >
MAM affects climate only below the top defined by this pressure (Pa).
Default: 0 for non-MAM cases, otherwise set by build-namelist
</entry>

<entry id="do_molec_press" type="real" category="press_lim"
       group="ref_pres_nl" valid_values="" >
Molecular diffusion will be done only if the lowest pressure is
below this limit (Pa).
Default: 0.1
</entry>

<entry id="molec_diff_bot_press" type="real" category="press_lim"
       group="ref_pres_nl" valid_values="" >
The level closest to this pressure (Pa) is the bottom of the region
where molecular diffusion is done.
Default: 50.
</entry>

<!-- Physics Debugging -->

<entry id="phys_debug_lat" type="real"  category="phys_debug"
       group="phys_debug_nl" valid_values="">
Use this variable to specify the latitude (in degrees) of a column to
debug.  The closest column in the physics grid will be used.
Default: none
</entry>

<entry id="phys_debug_lon" type="real"  category="phys_debug"
       group="phys_debug_nl" valid_values="">
Use this variable to specify the longitude (in degrees) of a column to
debug.  The closest column in the physics grid will be used.
Default: none
</entry>

<entry id="state_debug_checks" type="logical"  category="phys_debug"
       group="phys_ctl_nl" valid_values="">
If set to .true., turns on extra validation of physics_state objects
in physics_update. Used mainly to track down which package is the
source of invalid data in state.
Default: .false.
</entry>


<!-- Planetary Boundary Layer and Vertical Diffusion -->

<entry id="srf_flux_avg" type="integer" category="pbl"
       group="phys_ctl_nl" valid_values="0,1" >
Switch to turn on adjustment of the surface fluxes to reduce instabilities
in the surface layer.  Set to 1 to turn on the adjustments.
Default: 0
</entry>

<entry id="eddy_scheme" type="char*16" category="pbl"
       group="phys_ctl_nl" valid_values="HB,diag_TKE,HBR,CLUBB_SGS,SPCAM_sam1mom,SPCAM_m2005" >
Type of eddy scheme employed by the vertical diffusion package.  'HB' for
Holtslag and Boville; 'diag_TKE' for diagnostic tke version of Grenier and
Bretherton; 'HBR' for Rasch modified version of 'HB'.
Default: set by build-namelist
</entry>

<!-- Convective Scavenging -->

<entry id="convproc_do_aer" type="logical"  category="conv"
       group="phys_ctl_nl" valid_values="" >
Switch to use new convective scavenging for modal aerosols.  This scheme
replaces the call to ZM's convtran for the the modal aerosol number and
mass mixing ratio constituents.
Default: .false.
</entry>

<!-- Hydrostatic pressure work in mass adjustment -->
<entry id="dme_energy_adjust" type="logical"  category="NorESM"
       group="phys_ctl_nl" valid_values="" >
Switch to use appropriate energy adjustment in dry-mass adjustment at the
end of tphysac.
Default: .false.
</entry>

<!-- Diagnostics -->

<entry id="history_amwg" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Produce output for the AMWG diagnostic package.
Default: .true.
</entry>

<entry id="history_vdiag" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Produce output for the AMWG variability diagnostics.
Default: .false.
</entry>

<entry id="history_aerosol" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostic output of the aerosol tendencies
Default: .false.
</entry>

<entry id="history_aero_optics" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostic output of the aerosol optics
Default: .false.
</entry>

<entry id="history_eddy" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostic output of eddy variables
Default: .false.
</entry>

<entry id="history_budget" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for cam4 T/Q budget diagnostic output
Default: .false.
</entry>

<entry id="history_budget_histfile_num" type="integer"  category="diagnostics"
       group="phys_ctl_nl" valid_values="1,2,3,4,5,6" >
History tape number T/Q budget output is written to.
Default: 1
</entry>

<entry id="history_waccm" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostic output used primarily for WACCM runs.
Default: .true. if WACCM physics is on, .false. otherwise.
</entry>

<entry id="history_waccmx" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostic output used primarily for WACCM-X runs.
Default: .true. if WACCM-X is on, .false. otherwise.
</entry>

<entry id="history_chemistry" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostics specific to the current chemistry package or
configuration.
Default: .true.
</entry>

<entry id="history_carma" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostics specific to the current CARMA model.
Default: .true.
</entry>

<entry id="history_clubb" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostics specific to CLUBB.
Default: .true.
</entry>

<entry id="history_cesm_forcing" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off default output specific to CESM forcings.
Default: .false.
</entry>

<entry id="history_dust" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch for diagnostics specific to dust.
Default: .false.
</entry>

<entry id="history_scwaccm_forcing" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off default output specific to WACCM-SC forcings.
Default: .false.
</entry>

<entry id="history_chemspecies_srf" type="logical"  category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off default output chemical species mixing ratios in the surface layer.
Default: .false.
</entry>

<entry id="history_aerosol_base" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output of; mass mixing ratios and column burdens for compounded aerosols (BC, DUST, OM, SALT, SULFATE) 
and gas-phase column burdens from OsloAero; summation fields for emission/source, wet and dry deposition.
Also controls output of other key aerosol-specific output fields.
Default: .true.
</entry>

<entry id="history_aerosol_decomposed" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output of decomposed aerosols from OsloAero.
Default: .false.
</entry>

<entry id="history_gas" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output of 3D gasphase aerosols from OsloAero.
NOTE; the 2D column burdens are triggered by history_aerosol_base.
Default: .false.
</entry>

<entry id="history_aerosol_forcing" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output of forcing specific species in OsloAero.
Default: .false.
</entry>

<entry id="history_aerosol_radiation" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output of aerosol radiative properties.
Default: .false.
</entry>

<entry id="history_aerosol_debug_output" type="logical" category="diagnostics"
       group="phys_ctl_nl" valid_values="" >
Switch to turn on/off output for debugging summation from OsloAero. Some summation fields are compounded of variables passed through
the physics buffer. This flag provides the lagged output of these variables. Also controls summations used across multiple
summation fields.
Default: .false.
</entry>


<entry id="offline_driver" type="logical" category="offline_unit_driver"
       group="phys_ctl_nl" valid_values="" >
True when model is configured to use an offline driver.
Default: Set by build-namelist.
</entry>

<!-- Radiation -->
<entry id="radiation_scheme" type="char*16" category="radiation"
       group="phys_ctl_nl" valid_values="rrtmg,camrt" >
Type of radiation scheme employed.
Default: set by build-namelist
</entry>

<entry id="conv_water_in_rad" type="integer" category="radiation"
       group="conv_water_nl" valid_values="0,1,2" >
Convective water used in radiation?
0 ==> No
1 ==> Yes - Arithmetic average.
2 ==> Yes - Average in emissivity.
Default: set by build-namelist
</entry>

<entry id="conv_water_frac_limit" type="real" category="radiation"
       group="conv_water_nl" valid_values="" >
Lower limit of cumulus cloud fraction.
Default: set by build-namelist
</entry>

<entry id="absems_data" type="char*256" input_pathname="abs" category="radiation"
       group="radiation_nl" valid_values="" >
Full pathname of absorption/emission dataset.  Used only by camrt scheme.
It consists of terms used for determining the absorptivity and
emissivity of water vapor in the longwave parameterization of radiation.
Default: set by build-namelist.
</entry>

<entry id="iradae" type="integer"  category="radiation"
       group="radiation_nl" valid_values="">
Frequency of absorptivity/emissivity calculations in time steps (if
positive) or model hours (if negative).  To avoid having the abs/ems values
saved on the restart output, make sure that the interval of the abs/ems
calculation evenly divides the restart interval.
Default: -12
</entry>

<entry id="iradlw" type="integer"  category="radiation"
       group="radiation_nl" valid_values="">
Frequency of long-wave radiation calculation in timesteps (if positive) or
model hours (if negative).
Default: -1
</entry>

<entry id="iradsw" type="integer"  category="radiation"
       group="radiation_nl" valid_values="">
Frequency of short-wave radiation calculation in timesteps (if positive) or
model hours (if negative).
Default: -1
</entry>

<entry id="irad_always" type="integer"  category="radiation"
       group="radiation_nl" valid_values="">
Specifies length of time in timesteps (positive) or hours (negative) SW/LW
radiation will be run for every timestep from the start of an initial run.
Default: 0
</entry>

<entry id="spectralflux" type="logical"  category="radiation"
       group="radiation_nl" valid_values="" >
Return fluxes per band in addition to the total fluxes.
Default: FALSE
</entry>

<entry id="use_rad_dt_cosz" type="logical"  category="radiation"
       group="radiation_nl" valid_values="" >
If true, then average the zenith angle over the radiation timestep rather
than using instantaneous values.
Default: FALSE
</entry>

<entry id="mode_defs" type="char*256(120)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Definitions for the aerosol modes that may be used in the rad_climate and
rad_diag_* variables.
Default: set by build-namelist
</entry>

<entry id="rad_climate" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
A list of the radiatively active species, i.e., species that affect the
climate simulation via the radiative heating rate calculation.
Default: set by build-namelist
</entry>

<entry id="rad_diag_1" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
A list of species to be used in the first diagnostic radiative heating rate
calculation.  These species are not the ones affecting the climate
simulation.  This is a hook for performing radiative forcing calculations.
Default: none
</entry>

<entry id="rad_diag_2" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 2nd diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_3" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 3rd diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_4" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 4th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_5" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 5th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_6" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 6th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_7" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 7th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_8" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 8th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_9" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 9th diagnostic calculation.
Default: none
</entry>

<entry id="rad_diag_10" type="char*256(n_rad_cnst)"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
Analogous to rad_diag_1, but for the 10th diagnostic calculation.
Default: none
</entry>


<entry id="rad_data_output" type="logical"   category="radiation"
       group="rad_data_nl" valid_values="" >
output data needed for off-line radiation calculations
Default: FALSE
</entry>

<entry id="rad_data_histfile_num" type="integer"   category="radiation"
       group="rad_data_nl" valid_values="" >
History tape number radiation driver output data is written to.
Default: 0
</entry>

<entry id="rad_data_avgflag" type="char*1"   category="radiation"
       group="rad_data_nl" valid_values="" >
Averaging flag for radiation driver output data.
Default: 'A'
</entry>

<entry id="rad_data_fdh" type="logical"  category="offline_unit_driver"
       group="rad_data_nl" valid_values="" >
Switch to turn on Fixed Dynamical Heating in the offline radiation tool (PORT).
Default: false
</entry>

<!-- Aerosol and cloud optics -->

<entry id="water_refindex_file" type="char*256" input_pathname="abs" category="radiation"
       group="modal_aer_opt_nl" valid_values="" >
Full pathname of dataset for water refractive indices used in modal aerosol optics
Default: none
</entry>


<entry id="drydep_srf_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="">
Dry deposition surface values interpolated to model grid, required for unstructured atmospheric grids
with modal chemistry.
Default: none
</entry>

<entry id="oldcldoptics" type="logical"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
filepath and name for ice optics data for rrtmg
Default: none
</entry>

<entry id="liqcldoptics" type="char*32"  category="radiation"
       group="rad_cnst_nl" valid_values="slingo,gammadist" >
filepath and name for ice optics data for rrtmg
Default: none
</entry>

<entry id="icecldoptics" type="char*32"  category="radiation"
       group="rad_cnst_nl" valid_values="ebertcurry,mitchell" >
filepath and name for ice optics data for rrtmg
Default: none
</entry>

<entry id="iceopticsfile" type="char*256" input_pathname="abs"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
filepath and name for ice optics data for rrtmg
Default: none
</entry>

<entry id="liqopticsfile" type="char*256" input_pathname="abs"  category="radiation"
       group="rad_cnst_nl" valid_values="" >
filepath and name for liquid cloud (gamma distributed) optics data for rrtmg
Default: none
</entry>


<!-- Rayleigh Friction Parameterization -->

<entry id="rayk0" type="integer" category="rayleigh_friction"
       group="rayleigh_friction_nl" valid_values="">
Variable to specify the vertical index at which the
Rayleigh friction term is centered (the peak value).
Default: 2
</entry>

<entry id="raykrange" type="real" category="rayleigh_friction"
       group="rayleigh_friction_nl" valid_values="">
Rayleigh friction parameter to determine the width of the profile.  If set
to 0 then a width is chosen by the algorithm (see rayleigh_friction.F90).
Default: 0.
</entry>

<entry id="raytau0" type="real" category="rayleigh_friction"
       group="rayleigh_friction_nl" valid_values="">
Rayleigh friction parameter to determine the approximate value of the decay
time (days) at model top.  If 0.0 then no Rayleigh friction is applied.
Default: 0.
</entry>


<!-- Single column mode -->

<entry id="iopfile" type="char*128" input_pathname="abs" category="scam"
       group="scam_nl" valid_values="" >
Full pathname of IOP dataset.
Default: set by build-namelist.
</entry>

<entry id="scm_cambfb_mode" type="logical" category="scam"
       group="scam_nl" valid_values="">
Column bfb match with cam generated IOP.
Default: FALSE
</entry>

<entry id="scm_crm_mode" type="logical" category="scam"
       group="scam_nl" valid_values="">
Column radiation mode.
Default: FALSE
</entry>

<entry id="scm_iop_tg" type="logical" category="scam"
       group="scam_nl" valid_values="">
Use the specified surface properties.
Default: FALSE
</entry>

<entry id="scm_clubb_iop_name" type="char*200" category="scam"
       group="scam_nl" valid_values="">
IOP name for CLUBB running in single column mode
Default: ""
</entry>

<entry id="scm_relaxation" type="logical" category="scam"
       group="scam_nl" valid_values="">
Use relaxation.
Default: FALSE
</entry>

<entry id="scm_relax_fincl" type="char*24(1000)"  category="scam"
       group="scam_nl" valid_values="" >
List of fields that will be relaxed to obs
Default: none
</entry>

<entry id="scm_relax_linear" type="logical" category="scam"
       group="scam_nl" valid_values="">
Use relaxation. Linearly interpolate the timescale within specified
pressure range. (bpm)
Default: FALSE
</entry>

<entry id="scm_relax_top_p" type="real" category="scam"
       group="scam_nl" valid_values="">
Upper most pressure that will be relaxed.
Default: 1e36
</entry>

<entry id="scm_relax_bot_p" type="real" category="scam"
       group="scam_nl" valid_values="">
Lower most pressure that will be relaxed.
Default: -1e36
</entry>

<entry id="scm_relax_tau_sec" type="real" category="scam"
       group="scam_nl" valid_values="">
SCAM relaxation time constant in seconds
Default: 10800
</entry>

<entry id="scm_relax_tau_top_sec" type="real" category="scam"
       group="scam_nl" valid_values="">
SCAM relaxation time constant in seconds that will be used at
top of pressure range (i.e., the smaller pressure value). Will
be used from top of pressure range to model top.
Default: 10800
</entry>

<entry id="scm_relax_tau_bot_sec" type="real" category="scam"
       group="scam_nl" valid_values="">
SCAM relaxation time constant in seconds that will be used at
bottom of pressure range (i.e., the larger pressure value).
Default: 10800
</entry>

<entry id="scm_use_obs_T" type="logical" category="scam"
       group="scam_nl" valid_values="">
Use the SCAM-IOP specified T instead of using forecasted T at each time step.
Default: FALSE
</entry>

<entry id="scm_use_obs_uv" type="logical" category="scam"
       group="scam_nl" valid_values="">
Use the SCAM-IOP specified u,v instead of using forecasted u,v at each time step.
Default: TRUE
</entry>

<entry id="scm_zadv_T"  type="char*16" category="scam"
       group="scam_nl" valid_values="iop,eulc,off">
Use specific type of vertical advection for T.  Possible choices are 'iop', 'eulc' and 'off'
Default: 'eulc'
</entry>

<entry id="scm_zadv_uv" type="char*16" category="scam"
       group="scam_nl" valid_values="iop,eulc,off">
Use specific type of vertical advection for uv. Possible choices are 'iop', 'eulc' and 'off'
Default: 'eulc'
</entry>

<entry id="scm_zadv_q" type="char*16" category="scam"
       group="scam_nl" valid_values="iop,eulc,slt,off">
Use specific type of vertical advection for q. Possible choices are 'iop', 'eulc', 'slt'  and 'off'
Default: 'slt'
</entry>

<entry id="scm_iop_lhflxshflxTg" type="logical" category="scam"
       group="scam_nl" valid_values="iop,eulc,slt,off">
Use the SCAM-IOP specified surface LHFLX/SHFLX/ustar/Tg instead of using internally-computed values
Default: FALSE
</entry>

<entry id="scm_use_obs_qv" type="logical" category="scam"
       group="scam_nl" valid_values="iop,eulc,slt,off">
Use the SCAM-IOP specified observed water vapor at each time step instead of forecast value
Default: FALSE
</entry>

<entry id="scm_force_latlon" type="logical" category="scam"
       group="scam_nl" valid_values="iop,eulc,slt,off">
Force scam to use the lat lon fields specified in the scam namelist not what is closest to IOP avail lat lon
Default: FALSE
</entry>

<!-- Solar Parameters -->

<entry id="solar_const" type="real" category="solar"
       group="solar_data_opts" valid_values="">
Total solar irradiance (W/m2).
Default: 1361.27
</entry>

<entry id="solar_irrad_data_file" type="char*256" input_pathname="abs" category="solar"
       group="solar_data_opts" valid_values="" >
Full pathname of dataset for file that contains the solar photon energy spectra or TSI data
as a time series
Default: set by build-namelist
</entry>

<entry id="solar_euv_data_file" type="char*256" input_pathname="abs" category="solar"
       group="solar_data_opts" valid_values="" >
Full pathname of dataset for file that contains the solar EUV data
as a time series
Default: none
</entry>

<entry id="solar_parms_data_file" type="char*256" input_pathname="abs" category="waccm"
       group="solar_data_opts" valid_values="" >
Full pathname of time-variant dataset for the time-dependent proxies for
solar and geomagnetic activity( F10.7, F10.7a, Kp, Ap ).
Default: set by build-namelist.
</entry>

<entry id="solar_wind_data_file" type="char*256" input_pathname="abs" category="waccm"
       group="solar_data_opts" valid_values="" >
Full pathname of time-variant  dataset for the time-dependent solar wind parameters
(solar wind velocity and density; IMF By and Bz components).
Default: set by build-namelist.
</entry>

<entry id="solar_data_type" type="char*8" category="solar"
       group="solar_data_opts" valid_values="FIXED,SERIAL" >
Type of time interpolation for data in {{ hilight }}solar_irrad_data_file{{ closehilight }}.
Can be set to "FIXED" or "SERIAL".
Default: SERIAL
</entry>

<entry id="solar_data_ymd" type="integer"  category="solar"
       group="solar_data_opts" valid_values="" >
If {{ hilight }}solar_data_type{{ closehilight }} is "FIXED" then solar_data_ymd
is the date the solar data is fixed to.  If {{ hilight }}solar_data_type{{ closehilight }}
is "SERIAL" the solar_data_ymd is the start date of the time series
of solar data.
Format: YYYYMMDD
Default: none
</entry>

<entry id="solar_data_tod" type="integer"  category="solar"
       group="solar_data_opts" valid_values="" >
Seconds of the day corresponding to {{ hilight }}solar_data_ymd{{ closehilight }}
Default: current model time of day
</entry>

<entry id="solar_htng_spctrl_scl" type="logical"  category="solar"
       group="solar_data_opts" valid_values="" >
Use spectral scaling in the radiation heating
Default: set by build-namelist
</entry>

<!-- Test Tracers -->

<entry id="test_tracer_names" type="char*16(30)" category="test_tracers"
       group="test_tracers_nl" valid_values="" >
User can specify names for test tracers to be read from the initial file.
The number of names specified should be given as the value of the -nadv_tt
option to configure.
Default: ''
</entry>

<entry id="test_tracer_num" type="logical" category="test_tracers"
       group="test_tracers_nl" valid_values="" >
This variable should not be set by the user.  If configure has been invoked
with the '-nadv_tt N' option then build-namelist will set this variable to
the value N.  If {{ hilight }}test_tracer_names{{ closehilight }} have been specified
then N should be the number of names supplied.
If {{ hilight }}test_tracer_names{{ closehilight }} have not been specified, then the
tracer_suite module generates the tracer names and supplies the initial
values.
Default: set by configure
</entry>

<entry id="aoa_tracers_flag" type="logical" category="test_tracers"
       group="aoa_tracers_nl" valid_values="" >
If true age of air tracers are included.  This variable should not be set
by the user.  It will be set by build-namelist to be consistent with the
'-age_of_air_trcs' argument specified to configure.
Default: set by configure
</entry>

<entry id="aoa_read_from_ic_file" type="logical" category="test_tracers"
       group="aoa_tracers_nl" valid_values="" >
If true age of air tracers are read from the initial conditions file.
If this is not specified then they are not read from IC file.
Default: TRUE
</entry>

<!-- Time step -->

<entry id="dtime" type="integer"  category="time_mgr"
       group="camexp" valid_values="">
The length (in seconds) of the atm time step, i.e., the driver calls the
atm component once every dtime seconds.  This is also the coupling interval
between the dynamics and physics packages.  This variable is not actually
used in the atm model, but rather is used by build-namelist to set the
value of {{ hilight }}atm_cpl_dt{{ closehilight }}.  So it will have an effect only
when running CAM using standalone scripts.  The CESM scripts have their own
method for setting {{ hilight }}atm_cpl_dt{{ closehilight }}.
Default: is resolution and dycore dependent and is set by build-namelist.
</entry>

<!-- Topography -->

<entry id="bnd_topo" type="char*256" input_pathname="abs" category="topo"
       group="cam_initfiles_nl" valid_values="" >
Full pathname of time-invariant boundary dataset for topography fields.
Default: set by build-namelist.
</entry>

<entry id="use_topo_file" type="logical" category="topo"
       group="cam_initfiles_nl" valid_values="" >
Setting use_topo_file=.false. allows the user to specify that PHIS, SGH,
SGH30, and LANDM_COSLAT are all zero without having to supply a topo file
full of zeros.
Default: set by build-namelist.
</entry>

<!-- Tropopause -->

<entry id="tropopause_climo_file" type="char*256" input_pathname="abs" category="tropo"
       group="tropopause_nl" valid_values="" >
Full pathname of boundary dataset for tropopause climatology.
Default: set by build-namelist.
</entry>

<!-- CAM-CHEM -->

<entry id="ipcc_aircraft_emis" type="logical" category="cam_chem"
       group="camexp" valid_values="" >
Flag to tell build-namelist to use time-dependent external forcing
files for the aircraft emissions.
Default: FALSE
</entry>

<entry id="chem_rad_passive" type="logical" category="cam_chem"
       group="chem_inparm" valid_values="" >
Flag to set rad_climate variable so that the chemical tracers are
radiatively passive.
Default: FALSE
</entry>

<entry id="gas_wetdep_method" type="char*3" category="cam_chem"
       group="wetdep_inparm" valid_values="MOZ,NEU,OFF" >
Wet deposition method used
  MOZ --> mozart scheme is used
  NEU --> J Neu's scheme is used
  OFF --> wet deposition is turned off
Default: NEU except for SPCAM runs
</entry>

<entry id="gas_wetdep_list" type="char*16(1000)" category="cam_chem"
       group="wetdep_inparm" valid_values="" >
List of gas-phase species that undergo wet deposition via the wet deposition scheme.
Default: NONE
</entry>

<entry id="modal_accum_coarse_exch" type="logical" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Turns on accumulation to coarse mode exchange appropriate for the stratosphere.
This also changes the default mode definitions (widths and edges) via default
aerosol property input files.
Default: FALSE
</entry>

<entry id="modal_strat_sulfate" type="logical" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Turns on prognostic modal sulfate aerosols in the stratosphere.
Default: FALSE
</entry>

<entry id="aer_wetdep_list" type="char*16(1000)" category="cam_chem"
       group="aerosol_nl" valid_values="" >
List of aerosol species that undergo wet deposition.
Default: set by build-namelist.
</entry>

<entry id="SO4_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in SO4 wet removal
Default: set by build-namelist.
</entry>
<entry id="SO4_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in SO4 wet removal
Default: set by build-namelist.
</entry>
<entry id="NH4_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in NH4 wet removal
Default: set by build-namelist.
</entry>
<entry id="NH4_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in NH4 wet removal
Default: set by build-namelist.
</entry>
<entry id="NH4NO3_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in NH4NO3 wet removal
Default: set by build-namelist.
</entry>
<entry id="NH4NO3_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in NH4NO3 wet removal
Default: set by build-namelist.
</entry>
<entry id="CB2_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in CB2 wet removal
Default: set by build-namelist.
</entry>
<entry id="CB2_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in CB2 wet removal
Default: set by build-namelist.
</entry>
<entry id="OC2_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in OC2 wet removal
Default: set by build-namelist.
</entry>
<entry id="OC2_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in OC2 wet removal
Default: set by build-namelist.
</entry>
<entry id="dust_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in wet removal of BULK dust
Default: set by build-namelist.
</entry>
<entry id="dust_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in wet removal of BULK dust
Default: set by build-namelist.
</entry>
<entry id="sslt_sol_facti" type="real" category="cam_chem"
       group="camexp" valid_values="" >
In-cloud solubility factor used in wet removal of BULK sea salt
Default: set by build-namelist.
</entry>
<entry id="sslt_sol_factb" type="real" category="cam_chem"
       group="camexp" valid_values="" >
Below-cloud solubility factor used in wet removal of BULK sea salt
Default: set by build-namelist.
</entry>

<entry id="aer_drydep_list" type="char*16(1000)" category="cam_chem"
       group="aerosol_nl" valid_values="" >
List of aerosol species that undergo sediment (dry deposition).
Default: set by build-namelist.
</entry>

<entry id="sol_factb_interstitial" type="real" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Tuning for below cloud scavenging of interstitial modal aerosols.
Default: set by build-namelist.
</entry>

<entry id="sol_factic_interstitial" type="real" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Tuning for in-cloud scavenging of interstitial modal aerosols.
Default: set by build-namelist.
</entry>

<entry id="sol_facti_cloud_borne" type="real" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Tuning for in-cloud scavenging of cloud-borne modal aerosols.
Default: set by build-namelist.
</entry>

<entry id="seasalt_emis_scale" type="real" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Tuning for seasalt_emis
Default: set by build-namelist.
</entry>

<entry id="aer_sol_facti" type="real(1000)" category="cam_chem"
       group="aerosol_nl" valid_values="" >
In-cloud solubility factor used in BULK aerosol wet removal
Default: set by build-namelist.
</entry>

<entry id="aer_sol_factb" type="real(1000)" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Below-cloud solubility factor used in BULK aerosol wet removal
Default: set by build-namelist.
</entry>

<entry id="aer_scav_coef" type="real(1000)" category="cam_chem"
       group="aerosol_nl" valid_values="" >
Scavenging coefficient used in BULK aerosol wet removal
Default: set by build-namelist.
</entry>

<entry id="SO4_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of SO4
Default: set by build-namelist.
</entry>

<entry id="NH4_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of NH4
Default: set by build-namelist.
</entry>

<entry id="CB2_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of CB2
Default: set by build-namelist.
</entry>

<entry id="OC2_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of OC2
Default: set by build-namelist.
</entry>

<entry id="DST01_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of DST01
Default: set by build-namelist.
</entry>

<entry id="DST02_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of DST02
Default: set by build-namelist.
</entry>

<entry id="DST03_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of DST03
Default: set by build-namelist.
</entry>

<entry id="DST04_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of DST04
Default: set by build-namelist.
</entry>

<entry id="SSLT01_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of SSLT01
Default: set by build-namelist.
</entry>

<entry id="SSLT02_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of SSLT02
Default: set by build-namelist.
</entry>

<entry id="SSLT03_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of SSLT03
Default: set by build-namelist.
</entry>

<entry id="SSLT04_scav_coef" type="real(1000)" category="cam_chem"
       group="camexp" valid_values="" >
Scavenging coefficient used in the wet removal of SSLT04
Default: set by build-namelist.
</entry>

<entry id="airpl_emis_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of boundary dataset for airplane emissions.
Default: set by build-namelist.
</entry>

<entry id="clim_soilw_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset containing soil moisture fraction information used in 'xactive_atm'
method of calculating dry deposition of chemical tracers.
Default: set by build-namelist.
</entry>

<entry id="depvel_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset which contains the prescribed deposition velocities used
in the 'table' method of calculating dry deposition  of chemical tracers.
Default: set by build-namelist.
</entry>

<entry id="depvel_lnd_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset which contains land vegitation information used in 'xactive_atm'
method of calculating dry deposition of chemical tracers.
Default: set by build-namelist.
</entry>

<entry id="season_wes_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset which contains season information used in 'xactive_atm'
method of calculating dry deposition of chemical tracers.
Default: set by build-namelist.
</entry>

<entry id="dust_emis_fact" type="real" category="cam_chem"
       group="dust_nl" valid_values="" >
Tuning parameter for dust emissions.
Default: set by build-namelist.
</entry>

<entry id="steady_state_ion_elec_temp" type="logical" category="waccmx"
       group="ion_electron_temp_nl" valid_values="" >
If TRUE a steady state solution is used to calculate electron and
ion temperature.
Default: TRUE
</entry>

<entry id="efield_hflux_file" type="char*256" input_pathname="abs" category="waccm_phys"
       group="iondrag_nl" valid_values="" >
Full pathname of dataset for coefficient data used in WACCM to calculate ion drag
for high solar fluxes from the Scherliess low latitude electric potential model.
Default: set by build-namelist.
</entry>

<entry id="efield_lflux_file" type="char*256" input_pathname="abs" category="waccm_phys"
       group="iondrag_nl" valid_values="" >
Full pathname of dataset for coefficient data used in WACCM to calculate ion drag
for low solar fluxes from the Scherliess low latitude electric potential model.
Default: set by build-namelist.
</entry>

<entry id="efield_wei96_file" type="char*256" input_pathname="abs" category="waccm_phys"
       group="iondrag_nl" valid_values="" >
Full pathname of dataset for coefficient data used in WACCM to calculate ion drag
from the Weimer96 high latitude electric potential model.
Default: set by build-namelist.
</entry>

<entry id="empirical_ion_velocities" type="logical" category="waccm_phys"
       group="iondrag_nl" valid_values="" >
Switch to turn on empirical ExB ion drift velocities model for use in ion drag
parameterizations.  If this is false then it is assumed ion drift velocities are
supplied by an active ionosphere model.
Default: set by build-namelist.
</entry>

<entry id="electron_file" type="char*256" input_pathname="abs" category="waccm"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for the neutral species absorption cross sections for EUV
photo reactions producing electrons.
Default: set by build-namelist.
</entry>

<entry id="srf_emis_type" type="char*32" category="cam_chem"
       group="chem_inparm" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation of emission datasets specified.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
by {{ hilight }}srf_emis_specifier{{ closehilight }}.
Default: 'CYCLICAL'
</entry>

<entry id="srf_emis_cycle_yr" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The  cycle year of the surface emissions data
if {{ hilight }}srf_emis_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="srf_emis_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The date at which the surface emissions are fixed
if {{ hilight }}srf_emis_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="srf_emis_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}srf_emis_fixed_ymd{{ closehilight }}
at which the surface emissions are fixed
if {{ hilight }}srf_emis_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="euvac_file" type="char*256" input_pathname="abs" category="waccm"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for EUVAC solar EUV model (0.05-121nm).
Default: set by build-namelist.
</entry>

<entry id="ext_frc_cycle_yr" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The  cycle year of the external forcings (3D emissions) data
if {{ hilight }}ext_frc_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="ext_frc_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
Default: current model date
The date at which the external forcings are fixed
if {{ hilight }}ext_frc_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="ext_frc_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}ext_frc_fixed_ymd{{ closehilight }}
at which the external forcings are fixed
if {{ hilight }}ext_frc_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="ext_frc_specifier" type="char*256(1000)" category="cam_chem"
       group="chem_inparm" valid_values="" >
List of full pathnames of elevated emission (or external chemical forcings) datasets.

The chemistry package reads in elevated emission data from a set of netcdf files in
units of "molecules/cm3/s".  Each tracer species emissions is read from its
own file as directed by the namelist variable {{ hilight }}ext_frc_specifier{{ closehilight }}.  The
{{ hilight }}ext_frc_specifier{{ closehilight }} variable tells the model which species have elevated
emissions and the file path for the corresponding species.  That is, the
{{ hilight }}ext_frc_specifier{{ closehilight }} variable is set something like:

 ext_frc_specifier = 'SO2 -> /path/vrt.emis.so2.nc',
                     'SO4 -> /path/vrt.emis.so4.nc', etc...

Each emission file can have more than one source.  When the emission are
read in the sources are summed to give a total emission field for the
corresponding species.  The emission can be read in as time series of data,
cycle over a given year, or be fixed to a given date.

The vertical coordinate in these emissions files should be 'altitude' (km) so that the
vertical redistribution to the model layers is done using a mass conserving method.
If the vertical coordinate is altitude then data needs to be ordered from the
surface to the top (increasing altitude).

Default: set by build-namelist.
</entry>

<entry id="ext_frc_type" type="char*32" category="cam_chem"
       group="chem_inparm" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for fixed lower boundary data.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'CYCLICAL'
</entry>

<entry id="flbc_cycle_yr" type="integer" category="cam_chem"
       group="chem_surfvals_nl" valid_values="" >
The cycle year of the fixed lower boundary data
if {{ hilight }}flbc_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>
<entry id="flbc_fixed_ymd" type="integer" category="cam_chem"
       group="chem_surfvals_nl" valid_values="" >
The date at which the fixed lower boundary data is fixed
if {{ hilight }}flbc_type{{ closehilight }} is 'FIXED'..
Format: YYYYMMDD
Default: 0
</entry>
<entry id="flbc_fixed_tod" type="integer" category="cam_chem"
       group="chem_surfvals_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}flbc_fixed_ymd{{ closehilight }}
at which the fixed lower boundary data is fixed
if {{ hilight }}flbc_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="flbc_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_surfvals_nl" valid_values="" >
Full pathname of dataset for fixed lower boundary conditions.
Default: set by build-namelist.
</entry>

<entry id="flbc_list" type="char*16(1000)" category="cam_chem"
       group="chem_surfvals_nl" valid_values="" >
List of species that are fixed at the lower boundary.
Default: set by build-namelist.
</entry>

<entry id="flbc_type" type="char*8" category="cam_chem"
       group="chem_surfvals_nl" valid_values="CYCLICAL,SERIAL,FIXED" >
Type of time interpolation for fixed lower boundary data.
Default: 'CYCLICAL'
</entry>

<entry id="noy_ubc_filename" type="char*256" input_pathname="rel:noy_ubc_datapath" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
File name of dataset for NOy upper boundary conditions.
Default: set by build-namelist.
</entry>

<entry id="noy_ubc_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
Full pathname of the directory that contains the NOy upper boundary conditions files specified in
{{ hilight }}noy_ubc_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="noy_ubc_filelist" type="char*256" input_pathname="rel:noy_ubc_datapath" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed NOy upper boundary conditions.
The filenames in this file are relative to the directory specified by {{ hilight }}noy_ubc_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="noy_ubc_datatype" type="char*32" category="cam_chem"
       group="noy_ubc_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for NOy upper boundary conditions.
Default: 'SERIAL'
</entry>

<entry id="noy_ubc_cycle_yr" type="integer" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
The cycle year of the NOy upper boundary data
if {{ hilight }}flbc_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="noy_ubc_fixed_ymd" type="integer" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
The date at which the NOy upper boundary data is fixed
if {{ hilight }}flbc_type{{ closehilight }} is 'FIXED'..
Format: YYYYMMDD
Default: 0
</entry>

<entry id="noy_ubc_fixed_tod" type="integer" category="cam_chem"
       group="noy_ubc_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}noy_ubc_fixed_ymd{{ closehilight }}
at which the NOy upper boundary data is fixed
if {{ hilight }}flbc_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="fstrat_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for chemical tracers constrained  in the stratosphere
Default: set by build-namelist.
</entry>

<entry id="fstrat_list" type="char*16(1000)" category="cam_chem"
       group="chem_inparm" valid_values="" >
List of species that are constrained in the stratosphere.
Default: set by build-namelist.
</entry>

<entry id="lght_landmask_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for land mask applied to the lighting NOx production
Default: set by build-namelist.
</entry>

<entry id="lght_no_prd_factor" type="real" category="cam_chem"
       group="chem_inparm" valid_values="" >
Multiplication factor  applied to the lighting NOx production
Default: 1.0.
</entry>

<entry id="no_xfac_ubc" type="real" category="waccm"
       group="chem_inparm" valid_values="" >
Multiplication factor applied to the upper boundary NO mass mixing ratio.
Default: 1.0
</entry>

<entry id="photon_file" type="char*256" input_pathname="abs" category="waccm"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for the neutral species absorption cross sections.
Default: set by build-namelist.
</entry>

<entry id="tuv_xsect_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for fast-tuv photolysis cross sections
Default: set by build-namelist.
</entry>

<entry id="o2_xsect_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset of O2 cross sections for fast-tuv photolysis
Default: set by build-namelist.
</entry>

<entry id="exo_coldens_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset of O2 and 03 column densities above the model for look-up-table photolysis
Default: set by build-namelist.
</entry>

<entry id="aircraft_specifier" type="char*256(100)" category="cam_chem"
       group="aircraft_emit_nl" valid_values="" >
Filename of file that contains aircraft input file lists. The filenames in the files are relative
to the directory specified by {{ hilight }}aircraft_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="aircraft_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="aircraft_emit_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}aircraft_specifier{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="aircraft_type" type="char*32" category="cam_chem"
       group="aircraft_emit_nl" valid_values="CYCLICAL_LIST,SERIAL" >
Type of time interpolation for data in aircraft aerosol files.
Default: 'CYCLICAL_LIST'
</entry>

<entry id="aircraft_co2_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="camexp" valid_values="" >
Full pathname of the ac_CO2 file specified in the filelist in
{{ hilight }}aircraft_specifier{{ closehilight }}.  This is only to
get this name into the cam.input_data_list for the CESM scripts.
Default: set by build-namelist.
</entry>


<entry id="gcr_ionization_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}gcr_ionization_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="gcr_ionization_filename" type="char*256" input_pathname="rel:gcr_ionization_datapath" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
Filename of dataset for ionization rates by galactic cosmic rays.
Default: set by build-namelist.
</entry>

<entry id="gcr_ionization_filelist" type="char*256" input_pathname="rel:gcr_ionization_datapath" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
Filename of file that contains a sequence of filenames for ionization
rates by galactic cosmic rays.  The filenames in this file are relative
to the directory specified by {{ hilight }}gcr_ionization_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="gcr_ionization_fldname" type="char*16" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
Names of variables containing ionization rates (/cm3/sec) in the cosmic rays datasets.
Default: none
</entry>

<entry id="gcr_ionization_datatype" type="char*32" category="cam_chem"
       group="gcr_ionization_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in gcr_ionization files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="gcr_ionization_cycle_yr" type="integer" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
The  cycle year of the prescribed green house gas data
if {{ hilight }}gcr_ionization_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="gcr_ionization_fixed_ymd" type="integer" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
The date at which the prescribed green house gas data  is fixed
if {{ hilight }}gcr_ionization_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="gcr_ionization_fixed_tod" type="integer" category="cam_chem"
       group="gcr_ionization_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}gcr_ionization_fixed_ymd{{ closehilight }}
at which the prescribed green house gas data is fixed
if {{ hilight }}gcr_ionization_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>



<entry id="prescribed_aero_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}prescribed_aero_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_aero_model" type="char*5" category="cam_chem"
       group="camexp" valid_values="bulk,modal" >
Switch used to indicate which type of aerosols are prescribed -- bulk or modal.
This is used to set the default {{ hilight }}prescribed_aero_specifier{{ closehilight }} and
{{ hilight }}aerodep_flx_specifier{{ closehilight }} namelist variables.
Default: set by build-namelist
</entry>

<entry id="prescribed_aero_file" type="char*256" input_pathname="rel:prescribed_aero_datapath" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
Filename of dataset for prescribed aerosols.
Default: set by build-namelist.
</entry>

<entry id="prescribed_aero_filelist" type="char*256" input_pathname="rel:prescribed_aero_datapath" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
aerosols.  The filenames in this file are relative to the directory specified
by {{ hilight }}prescribed_aero_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_aero_rmfile" type="logical" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
Remove the file containing prescribed aerosol concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="prescribed_aero_specifier" type="char*32(50)" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
A list of variable names of the concentration fields in the prescribed aerosol datasets
and corresponding names used in the physics buffer seperated by colons.  For example:

 prescribed_aero_specifier = 'pbuf_name1:ncdf_fld_name1','pbuf_name2:ncdf_fld_name2', ...

If there is no colon seperater then the specified name is used as both the pbuf_name and ncdf_fld_name,

Default: none
</entry>

<entry id="prescribed_aero_type" type="char*32" category="cam_chem"
       group="prescribed_aero_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed_aero files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="prescribed_aero_cycle_yr" type="integer" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
The  cycle year of the prescribed aerosol data
if {{ hilight }}prescribed_aero_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="prescribed_aero_fixed_ymd" type="integer" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
The date at which the prescribed aerosol data is fixed
if {{ hilight }}prescribed_aero_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="prescribed_aero_fixed_tod" type="integer" category="cam_chem"
       group="prescribed_aero_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}prescribed_aero_fixed_ymd{{ closehilight }}
at which the prescribed aerosol data is fixed
if {{ hilight }}prescribed_aero_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="aerodep_flx_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}aerodep_flx_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="aerodep_flx_file" type="char*256" input_pathname="rel:aerodep_flx_datapath" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
Filename of dataset for prescribed aerosols.
Default: set by build-namelist.
</entry>

<entry id="aerodep_flx_filelist" type="char*256" input_pathname="rel:aerodep_flx_datapath" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
aerosols.  The filenames in this file are relative to the directory specified
by {{ hilight }}aerodep_flx_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="aerodep_flx_rmfile" type="logical" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
Remove the file containing prescribed aerosol deposition fluxes from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="aerodep_flx_specifier" type="char*32(22)" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
Names of variables containing aerosol data in the prescribed aerosol datasets.
Default: none
</entry>

<entry id="aerodep_flx_type" type="char*32" category="cam_chem"
       group="aerodep_flx_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in aerodep_flx files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="aerodep_flx_cycle_yr" type="integer" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
The  cycle year of the prescribed aerosol flux data
if {{ hilight }}aerodep_flx_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="aerodep_flx_fixed_ymd" type="integer" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
The date at which the prescribed aerosol flux data is fixed
if {{ hilight }}aerodep_flx_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="aerodep_flx_fixed_tod" type="integer" category="cam_chem"
       group="aerodep_flx_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}ssaerodep_flx_fixed_ymd{{ closehilight }}
at which the prescribed aerosol flux data is fixed
if {{ hilight }}saerodep_flx_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="prescribed_ghg_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}prescribed_ghg_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ghg_file" type="char*256" input_pathname="rel:prescribed_ghg_datapath" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
Filename of dataset for prescribed GHGs.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ghg_filelist" type="char*256" input_pathname="rel:prescribed_ghg_datapath" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
GHGs.  The filenames in this file are relative to the directory specified
by {{ hilight }}prescribed_ghg_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ghg_rmfile" type="logical" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
Remove the file containing prescribed green house gas concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="prescribed_ghg_specifier" type="char*16(100)" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
Names of variables containing GHG data in the prescribed GHG datasets.
Default: none
</entry>

<entry id="prescribed_ghg_type" type="char*32" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed_ghg files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="prescribed_ghg_cycle_yr" type="integer" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
The  cycle year of the prescribed green house gas data
if {{ hilight }}prescribed_ghg_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="prescribed_ghg_fixed_ymd" type="integer" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
The date at which the prescribed green house gas data  is fixed
if {{ hilight }}prescribed_ghg_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="prescribed_ghg_fixed_tod" type="integer" category="cam_chem"
       group="prescribed_ghg_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}prescribed_ghg_fixed_ymd{{ closehilight }}
at which the prescribed green house gas data is fixed
if {{ hilight }}prescribed_ghg_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="prescribed_ozone_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}prescribed_ozone_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ozone_file" type="char*256" input_pathname="rel:prescribed_ozone_datapath" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
Filename of dataset for prescribed ozone.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ozone_filelist" type="char*256" input_pathname="rel:prescribed_ozone_datapath" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
ozone.  The filenames in this file are relative to the directory specified
by {{ hilight }}prescribed_ozone_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_ozone_name" type="char*16" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
Name of variable containing ozone data in the prescribed ozone datasets.
Default: 'ozone'
</entry>

<entry id="prescribed_ozone_rmfile" type="logical" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
Remove the file containing prescribed ozone concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="prescribed_ozone_type" type="char*32" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed_ozone files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="prescribed_ozone_cycle_yr" type="integer" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
The  cycle year of the prescribed ozone data
if {{ hilight }}prescribed_ozone_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="prescribed_ozone_fixed_ymd" type="integer" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
The date at which the prescribed ozone data is fixed
if {{ hilight }}prescribed_ozone_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="prescribed_ozone_fixed_tod" type="integer" category="cam_chem"
       group="prescribed_ozone_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}prescribed_ozone_fixed_ymd{{ closehilight }}
at which the prescribed ozone data is fixed
if {{ hilight }}prescribed_ozone_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="prescribed_volcaero_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}prescribed_volcaero_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_volcaero_file" type="char*256" input_pathname="rel:prescribed_volcaero_datapath" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
Filename of dataset for prescribed volcaero.
Default: set by build-namelist.
</entry>

<entry id="prescribed_volcaero_filelist" type="char*256" input_pathname="rel:prescribed_volcaero_datapath" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
volcanic aerosols.  The filenames in this file are relative to the directory specified
by {{ hilight }}prescribed_volcaero_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_volcaero_name" type="char*16" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
Name of variable containing volcaero data in the prescribed volcaero datasets.
Default: 'MMRVOLC'
</entry>

<entry id="prescribed_volcaero_rmfile" type="logical" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
Remove the file containing prescribed volcanic aerosol concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="prescribed_volcaero_type" type="char*32" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed_volcaero files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="prescribed_volcaero_cycle_yr" type="integer" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
The  cycle year of the prescribed volcanic aerosol data
if {{ hilight }}prescribed_volcaero_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="prescribed_volcaero_fixed_ymd" type="integer" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
The date at which the prescribed volcanic aerosol data  is fixed
if {{ hilight }}prescribed_volcaero_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="prescribed_volcaero_fixed_tod" type="integer" category="cam_chem"
       group="prescribed_volcaero_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}prescribed_volcaero_fixed_ymd{{ closehilight }}
at which the prescribed volcanic aerosol data is fixed
if {{ hilight }}prescribed_volcaero_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>


<entry id="prescribed_strataero_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}prescribed_strataero_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_strataero_file" type="char*256" input_pathname="rel:prescribed_strataero_datapath" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
Filename of dataset for prescribed volcaero.
Default: set by build-namelist.
</entry>

<entry id="prescribed_strataero_filelist" type="char*256" input_pathname="rel:prescribed_strataero_datapath" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
stratospheric aerosols.  The filenames in this file are relative to the directory specified
by {{ hilight }}prescribed_strataero_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="prescribed_strataero_specifier" type="char*16" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
Name of variable containing prescribed stratospheric aerosol specifiers
Default: set by the CAM program
</entry>

<entry id="prescribed_strataero_rmfile" type="logical" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
Remove the file containing prescribed volcanic aerosol concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="prescribed_strataero_type" type="char*32" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed_strataero files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="prescribed_strataero_cycle_yr" type="integer" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
The  cycle year of the prescribed volcanic aerosol data
if {{ hilight }}prescribed_strataero_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="prescribed_strataero_fixed_ymd" type="integer" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
The date at which the prescribed volcanic aerosol data  is fixed
if {{ hilight }}prescribed_strataero_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="prescribed_strataero_fixed_tod" type="integer" category="cam_chem"
       group="prescribed_strataero_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}prescribed_strataero_fixed_ymd{{ closehilight }}
at which the prescribed volcanic aerosol data is fixed
if {{ hilight }}prescribed_strataero_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="prescribed_strataero_feedback" type="logical" category="cam_chem"
       group="camexp" valid_values="" >
Switch to turn on climate feed backs due to prescribed stratospheric aerosols via
the rad_climate namelist variable.
Default: false
</entry>

<entry id="prescribed_strataero_3modes" type="logical" category="cam_chem"
       group="camexp" valid_values="" >
If true the prescribed stratospheric aerosols have three distribution modes.
Default: true for CAM6, otherwise false
</entry>

<entry id="prescribed_strataero_use_chemtrop" type="logical" category="aerosol"
       group="prescribed_strataero_nl" valid_values="" >
Indicates whether to use the unified chemistry tropopause method to set prescribed
stratospheric aerosols below the tropopause to zero.  This has a maximum altitude
level corresponding to 300 hPa for latitudes poleward of 50 degrees.
Default: set by build-namelist
</entry>

<entry id="rsf_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for radiative source function used in look up table photloysis
Default: set by build-namelist.
</entry>

<entry id="snoe_ubc_file" type="char*256" input_pathname="abs" category="waccm"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for the coefficients of the NOEM nitric oxide model used
to calculate its upper boundary concentration.
Default: set by build-namelist.
</entry>

<entry id="soil_erod_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="dust_nl" valid_values="" >
Full pathname of boundary dataset for soil erodibility factors.
Default: set by build-namelist.
</entry>

<entry id="srf_emis_specifier" type="char*256(1000)" category="cam_chem"
       group="chem_inparm" valid_values="" >
List of full pathnames of surface emission datasets.

The chemistry package reads in emission data from a set of netcdf files in
units of "molecules/cm2/s".  Each tracer species emissions is read from its
own file as directed by the namelist variable {{ hilight }}srf_emis_specifier{{ closehilight }}.  The
{{ hilight }}srf_emis_specifier{{ closehilight }} variable tells the model which species have emissions
and the file path for the corresponding species.  That is, the
{{ hilight }}srf_emis_specifier{{ closehilight }} variable is set something like:

 srf_emis_specifier = 'CH4 -> /path/emis.ch4.nc',
                      'CO  -> /path/emis.co.nc', etc...

Each emission file can have more than one source.  When the emission are
read in the sources are summed to give a total emission field for the
corresponding species.  The emission can be read in as time series of data,
cycle over a given year, or be fixed to a given date.

Default: set by build-namelist.
</entry>


<entry id="sulf_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="sulf_nl" valid_values="" >
Full pathname of dataset containing tropopheric sulfate aerosols
Default: set by build-namelist.
</entry>

<entry id="sulf_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="sulf_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}sulf_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="sulf_filelist" type="char*256" input_pathname="rel:sulf_datapath" category="cam_chem"
       group="sulf_nl" valid_values="" >
Filename of file that contains a sequence of filenames for prescribed
sulfate.  The filenames in this file are relative to the directory specified
by {{ hilight }}sulf_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="sulf_name" type="char*16" category="cam_chem"
       group="sulf_nl" valid_values="" >
Name of variable containing sulfate data in the prescribed sulfate datasets.
Default: 'SULFATE'
</entry>

<entry id="sulf_rmfile" type="logical" category="cam_chem"
       group="sulf_nl" valid_values="" >
Remove the file containing prescribed sulfate concentrations from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="sulf_type" type="char*32" category="cam_chem"
       group="sulf_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in prescribed sulfate files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'CYCLICAL'
</entry>

<entry id="sulf_cycle_yr" type="integer" category="cam_chem"
       group="sulf_nl" valid_values="" >
The  cycle year of the prescribed sulfate data
if {{ hilight }}sulf_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="sulf_fixed_ymd" type="integer" category="cam_chem"
       group="sulf_nl" valid_values="" >
The date at which the prescribed sulfate data is fixed
if {{ hilight }}sulf_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="sulf_fixed_tod" type="integer" category="cam_chem"
       group="sulf_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}sulf_fixed_ymd{{ closehilight }}
at which the prescribed sulfate data is fixed
if {{ hilight }}sulf_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>






<entry id="tgcm_ubc_file" type="char*256" input_pathname="abs" category="waccm"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for TGCM upper boundary
Default: set by build-namelist.
</entry>
<entry id="tgcm_ubc_data_type" type="char*32" category="waccm"
       group="chem_inparm" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in TGCM upper boundary file.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="tgcm_ubc_cycle_yr" type="integer" category="waccm"
       group="chem_inparm" valid_values="" >
The cycle year of the TGCM upper boundary data
if {{ hilight }}tgcm_ubc_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="tgcm_ubc_fixed_ymd" type="integer" category="waccm"
       group="chem_inparm" valid_values="" >
The date at which the TGCM upper boundary data is fixed
if {{ hilight }}tgcm_ubc_type{{ closehilight }} is 'FIXED'.
Format: YYYY
Default: 0
</entry>

<entry id="tgcm_ubc_fixed_tod" type="integer" category="waccm"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}tgcm_ubc_fixed_ymd{{ closehilight }}
at which the TGCM upper boundary data is fixed
if {{ hilight }}tgcm_ubc_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="t_pert_ubc" type="real" category="waccm"
       group="chem_inparm" valid_values="" >
Perturbation applied to the upper boundary temperature.
Default: 0.0
</entry>

<entry id="chem_freq" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
Frequency in time steps at which the chemical equations are solved.
Default: 1
</entry>

<entry id="chlorine_loading_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of dataset for linoz cholirine loading.
Default: none.
</entry>
<entry id="chlorine_loading_type" type="char*8" category="cam_chem"
       group="chem_inparm" valid_values="SERIAL,FIXED" >
Type of time interpolation type for data in  {{ hilight }}chlorine_loading_file{{ closehilight }}
Default: 'SERIAL'
</entry>
<entry id="chlorine_loading_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}chlorine_loading_fixed_ymd{{ closehilight }}
at which the chlorine loading data is fixed
if {{ hilight }}chlorine_loading_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>
<entry id="chlorine_loading_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The date at which the chlorine loading data is fixed
if {{ hilight }}chlorine_loading_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>


<entry id="linoz_data_path" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}linoz_data_filelist{{ closehilight }}.
Default: none.
</entry>

<entry id="linoz_data_file" type="char*256" input_pathname="rel:linoz_data_path" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of dataset for LINOZ data.
Default: none.
</entry>

<entry id="linoz_data_filelist" type="char*256" input_pathname="rel:linoz_data_datapath" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of file that contains a sequence of filenames of the linoz data.
The filenames in this file are relative to the directory specified
by {{ hilight }}linoz_data_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="linoz_data_type" type="char*24" category="cam_chem"
       group="chem_inparm" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in linoz_data files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'SERIAL'
</entry>

<entry id="linoz_data_rmfile" type="logical" category="cam_chem"
       group="chem_inparm" valid_values="TRUE,FALSE" >
Remove the file containing LINOZ data from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="linoz_data_cycle_yr" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The  cycle year of the LINOZ data
if {{ hilight }}linoz_data_type{{ closehilight }} is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="linoz_data_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The date at which the LINOZ data  is fixed
if {{ hilight }}linoz_data_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="linoz_data_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}linoz_data_fixed_ymd{{ closehilight }}
at which the LINOZ data is fixed
if {{ hilight }}linoz_data_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="tracer_cnst_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}tracer_cnst_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="tracer_cnst_file" type="char*256" input_pathname="rel:tracer_cnst_datapath" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of dataset for the prescribed chemical constituents.
Default: set by build-namelist.
</entry>

<entry id="tracer_cnst_filelist" type="char*256" input_pathname="rel:tracer_cnst_datapath" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of file that contains a sequence of filenames for the prescribed chemical constituents.
The filenames in this file are relative to the directory specified
by {{ hilight }}tracer_cnst_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="tracer_cnst_rmfile" type="logical" category="cam_chem"
       group="chem_inparm" valid_values="" >
Remove the file containing prescribed chemical constituents from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="tracer_cnst_specifier" type="char*256(100)" category="cam_chem"
       group="chem_inparm" valid_values="" >
List of prescribed chemical constituents.
Default: set by build-namelist.
</entry>

<entry id="tracer_cnst_type" type="char*24" category="cam_chem"
       group="chem_inparm" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in tracer_cnst files.
Default: 'SERIAL'
</entry>

<entry id="tracer_cnst_cycle_yr" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The  cycle year of the prescribed chemical constituents data
if {{ hilight }}tracer_cnst_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="tracer_cnst_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The date at which the chemical constituents data is fixed
if {{ hilight }}tracer_cnst_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="tracer_cnst_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}tracer_cnst_fixed_ymd{{ closehilight }}
at which the chemical constituents data is fixed
if {{ hilight }}tracer_cnst_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="tracer_srcs_datapath" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}tracer_srcs_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="tracer_srcs_file" type="char*256" input_pathname="rel:tracer_srcs_datapath" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of dataset for the prescribed chemical sources.
Default: set by build-namelist.
</entry>

<entry id="tracer_srcs_filelist" type="char*256" input_pathname="rel:tracer_srcs_datapath" category="cam_chem"
       group="chem_inparm" valid_values="" >
Filename of file that contains a sequence of datasets for the prescribed chemical sources.
The filenames in this file are relative to the directory specified
by {{ hilight }}tracer_srcs_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="tracer_srcs_rmfile" type="logical" category="cam_chem"
       group="chem_inparm" valid_values="" >
Remove the file containing prescribed chemical sources from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="tracer_srcs_specifier" type="char*256(100)" category="cam_chem"
       group="chem_inparm" valid_values="" >
List of prescribed chemical sources
Default: set by build-namelist.
</entry>

<entry id="tracer_srcs_type" type="char*24" category="cam_chem"
       group="chem_inparm" valid_values="" >
Type of time interpolation for data in tracer_srcs files.
Default: 'SERIAL'
</entry>

<entry id="tracer_srcs_cycle_yr" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The  cycle year of the prescribed chemical sources data
if {{ hilight }}tracer_srcs_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="tracer_srcs_fixed_ymd" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The date at which the chemical sources data is fixed
if {{ hilight }}tracer_srcs_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="tracer_srcs_fixed_tod" type="integer" category="cam_chem"
       group="chem_inparm" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}tracer_srcs_fixed_ymd{{ closehilight }}
at which the chemical sources data is fixed
if {{ hilight }}tracer_srcs_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="xactive_prates" type="logical" category="cam_chem"
       group="chem_inparm" valid_values="" >
If TRUE then use the FTUV method to calculate the photolysis reactions rates,
otherwise use the look up table method.
Default: FALSE
</entry>

<entry id="xs_coef_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of dataset for  Chebyshev polynomial Coeff data used for photolysis
cross sections.
Default: set by build-namelist.
</entry>

<entry id="xs_long_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of cross section dataset for long wavelengh photolysis
Default: set by build-namelist.
</entry>

<entry id="xs_short_file" type="char*256" input_pathname="abs" category="cam_chem"
       group="chem_inparm" valid_values="" >
Full pathname of cross section dataset for short wavelengh photolysis
Default: set by build-namelist.
</entry>

<!-- Namelist read by seq_drydep_mod and shared by CAM and CLM -->

<entry id="drydep_list" type="char*16(1000)" category="dry_deposition"
       group="drydep_inparm" valid_values="" >
List of species that undergo dry deposition.
Default: set by build-namelist.
</entry>

<entry id="drydep_method" type="char*16" category="dry_deposition"
       group="drydep_inparm" valid_values="xactive_atm,xactive_lnd,table" >
Dry deposition method used.  This specifies the method used to calculate dry
deposition velocities of gas-phase chemical species.  The available methods
are:
 'table'       - prescribed method in CAM
 'xactive_atm' - interactive method in CAM
 'xactive_lnd' - interactive method in CLM
Default: set by build-namelist
</entry>


<entry id="rxn_rate_sums" type="char*256(200)" category="cam_chem"
       group="rxn_rate_diags_nl" valid_values="" >
Give the user the ability to specify rate families (or groupings) diagnostics based
on reaction tag names. These group names can be added to history fincl variables.
A "+" character at the end of a string indicates that the summation will continue with the next string.
Example:
 rate_sums =
   'OX_P = NO_HO2 + CH3O2_NO + 2*jo2_b ... ',
   'OX_L = NO2_O_M + HO2_O3 + CLO_O ...',
   'RO2_RO2_sum = CH3O2_CH3O2a + CH3O2_CH3O2b + C2H5O2_CH3O2 + C2H5O2_C2H5O2 + CH3CO3_CH3O2 +',
               'CH3CO3_CH3CO3 + CH3H7O2_CH3O2 + RO2_CH3O2 + MACRO2_CH3O2 ...',
 fincl1 = 'OX_P','OX_L', 'RO2_RO2_sum', ...
Default: none
</entry>

<entry id="vmr_sums" type="char*256(200)" category="cam_chem"
       group="species_sums_nl" valid_values="" >
Give the user the ability to specify species families (or groupings) diagnostics in volume mixing ratio.
These group names can be added to history fincl variables.  The units are mole/mole.
A "+" character at the end of a string indicates that the summation will continue with the next string.
Example:
 vmr_sums =
   'SOAG = SOAG0 + SOAG1 + SOAG2 + SOAG3 + SOAG4',
   'NOy = N + NO + NO2 + NO3 + 2*N2O5 + HNO3 + HO2NO2 + CLONO2 +',
       'BRONO2 + PAN + MPAN + ISOPNO3 + ONITR +',
       'HONITR + ALKNIT + ISOPNITA + ISOPNITB + ISOPNOOH + NC4CH2OH +',
       'NC4CHO + NOA + NTERPOOH + PBZNIT + TERPNIT'
 fincl1 = 'NOy','SOAG', ...
Default: none
</entry>

<entry id="mmr_sums" type="char*256(200)" category="cam_chem"
       group="species_sums_nl" valid_values="" >
Give the user the ability to specify species families (or groupings) diagnostics in mass mixing ratio.
These group names can be added to history fincl variables. The units are kg/kg.
A "+" character at the end of a string indicates that the summation will continue with the next string.
Example:
 mmr_sums =
    'soa_a1 = soa1_a1 + soa2_a1 + soa3_a1 + soa4_a1 + soa5_a1',
    'soa_a2 = soa1_a2 + soa2_a2 + soa3_a2 + soa4_a2 + soa5_a2'
 fincl1 = 'soa_a1','soa_a2', ...
Default: none
</entry>

<entry id="chem_use_chemtrop" type="logical" category="chemistry"
       group="chem_inparm" valid_values="" >
Indicates whether to use the unified chemistry tropopause method to set the
tropopause used in gas phase and aerosol chemical processes.  This has a maximum altitude
level corresponding to 300 hPa for latitudes poleward of 50 degrees.
Default: set by build-namelist
</entry>

<entry id="fire_emis_factors_file" type="char*256" input_pathname="abs" category="Fire_emissions"
       group="fire_emis_nl" valid_values="" >
File containing fire emissions factors.
Default: none
</entry>

<entry id="fire_emis_specifier" type="char*1024(100)" category="Fire_emissions"
       group="fire_emis_nl" valid_values="" >
Fire emissions specifier.
Default: none
</entry>

<entry id="fire_emis_elevated" type="logical" category="Fire_emissions"
       group="fire_emis_nl" valid_values="" >
If true fire emissions are input into atmosphere as elevated forcings.
Otherwise they are treated as surface emissions.
Default: TRUE
</entry>

<entry id="ndep_list" type="char*16(2)" category="Nitrogen Deposition"
       group="ndep_inparm" valid_values="" >
List of nitrogen deposition fluxes to be sent from CAM to surface models.
Default: set by build-namelist.
</entry>

<entry id="megan_factors_file" type="char*256" input_pathname="abs" category="VOC_emissions"
       group="megan_emis_nl" valid_values="" >
File containing MEGAN emissions factors.
Default: set by build-namelist.
</entry>

<entry id="megan_specifier" type="char*1024(100)" category="VOC_emissions"
       group="megan_emis_nl" valid_values="" >
MEGAN specifier.
Default: set by build-namelist.
</entry>

<entry id="megan_mapped_emisfctrs" type="logical" category="VOC_emissions"
       group="megan_emis_nl" valid_values=".true.,.false." >
MEGAN mapped isoprene emissions facters switch
If true then use mapped MEGAN emissions facters for isoprene.
Default: .false.
</entry>

<entry id="carma_fields" type="char*256" category="carma"
       group="carma_inparm" valid_values="" >
List of fluxes needed by the CARMA model, from CLM to CAM.
Default: set by build-namelist.
</entry>

<!-- WACCM_GHG Chemistry -->

<entry id="waccm_forcing_file" type="char*256" input_pathname="rel:waccm_forcing_datapath" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
Filename of the prescribed waccm forcing data used with waccm_sc chemistry.
This contains prescribed constituents for non-LTE calculations and heating rates
for wavelengths less than 200 nm.
Default: set by build-namelist.
</entry>

<entry id="waccm_forcing_datapath" type="char*256" input_pathname="abs" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
Full pathname of the directory that contains the files specified in
{{ hilight }}waccm_forcing_filelist{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="waccm_forcing_filelist" type="char*256" input_pathname="rel:waccm_forcing_datapath" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
A file that contains a sequence of filenames for prescribed waccm forcing data.
The filenames in this file are relative to the directory specified
by {{ hilight }}waccm_forcing_datapath{{ closehilight }}.
Default: set by build-namelist.
</entry>

<entry id="waccm_forcing_rmfile" type="logical" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
Remove the file containing prescribed waccm forcing data from local disk when no longer needed.
Default: FALSE
</entry>

<entry id="waccm_forcing_specifier" type="char*16(100)" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
Names of variables containing concentrations and heating rate in the prescribed waccm forcing datasets.
Default: none
</entry>

<entry id="waccm_forcing_type" type="char*32" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="CYCLICAL,SERIAL,INTERP_MISSING_MONTHS,FIXED" >
Type of time interpolation for data in waccm_forcing files.
Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'.
Default: 'CYCLICAL'
</entry>

<entry id="waccm_forcing_cycle_yr" type="integer" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
The  cycle year of the prescribed waccm forcing data
if {{ hilight }}waccm_forcing_type{{ closehilight }}  is 'CYCLICAL'.
Format: YYYY
Default: 0
</entry>

<entry id="waccm_forcing_fixed_ymd" type="integer" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
The date at which the prescribed waccm forcing data is fixed
if {{ hilight }}waccm_forcing_type{{ closehilight }} is 'FIXED'.
Format: YYYYMMDD
Default: 0
</entry>

<entry id="waccm_forcing_fixed_tod" type="integer" category="waccm_sc"
       group="waccm_forcing_nl" valid_values="" >
The time of day (seconds) corresponding to {{ hilight }}waccm_forcing_fixed_ymd{{ closehilight }}
at which the prescribed waccm forcing data is fixed
if {{ hilight }}waccm_forcing_type{{ closehilight }} is 'FIXED'.
Default: 0 seconds
</entry>

<entry id="h2orates" type="char*256" input_pathname="abs" category="waccm_sc"
       group="chem_inparm" valid_values="" >
Full pathname of time-variant boundary dataset for H2O production/loss rates.
Default: set by build-namelist.
</entry>

<!-- WACCM -->

<entry id="nlte_use_mo" type="logical" category="waccm_phys"
       group="radheat_nl" valid_values="" >
Determines which constituents are used from non-LTE calculations.
TRUE implies use prognostic constituents.
FALSE implies use constituents from dataset specified by {{ hilight }}waccm_forcing_file{{ closehilight }}.
Default: TRUE for full chemistry WACCM; FALSE for WACCM_SC.
</entry>

<entry id="nlte_limit_co2" type="logical" category="waccm_phys"
       group="radheat_nl" valid_values="" >
If TRUE apply upper limit to CO2 concentrations passed to the Formichev non-LTE cooling calculation
(code not intended for values greater than 720 ppmv).  Running with flag set to TRUE could lead to
incorrect cooling rates if model CO2 exceeds 720 ppmv.  If FALSE simulation will abort if CO2 levels
exceed this value at altitudes above 1 mbar.  The 720 ppmv CO2 limiter in the Formichev non-LTE cooling
scheme is applied to all vertical levels regardless of this setting.
Default: FALSE
</entry>

<entry id="qbo_cyclic" type="logical" category="waccm_phys"
       group="qbo_nl" valid_values="" >
TRUE implies assume cyclic qbo data.
Default: FALSE
</entry>

<entry id="qbo_forcing_file" type="char*256" input_pathname="abs" category="waccm_phys"
       group="qbo_nl" valid_values="" >
Filepath for qbo forcing dataset.
Default: Set by build-namelist.
</entry>

<entry id="qbo_use_forcing" type="logical" category="waccm_phys"
       group="qbo_nl" valid_values="" >
TRUE implies qbo package is active.
Default: FALSE
</entry>

<entry id="fixed_geomag_year" type="integer" category="waccm"
       group="geomag_nl" valid_values="" >
If set this year is used for setting geomagnetic coordinates through out the
simulation.  If not set the model simulation year is used.
Default: none
</entry>

<entry id="igrf_geomag_coefs_file" type="char*256" input_pathname="abs" category="waccm"
       group="geomag_nl" valid_values="" >
International Geomagnetic Reference Field (IGRF) coefficients.
Default: None.
</entry>

<entry id="epp_all_filepath" type="char*256" input_pathname="abs" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Filepath input dataset for ionization due to energetic particle precipitation.
Default: None.
</entry>
<entry id="epp_all_varname" type="char*80" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Variable name in netCDF file {{ hilight }}epp_all_filepath{{ closehilight }} which contains
ion pairs production rates.
Default: None.
</entry>

<entry id="epp_spe_filepath" type="char*256" input_pathname="abs" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Filepath input dataset for ionization due to solar proton events.
Default: None.
</entry>
<entry id="epp_spe_varname" type="char*80" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Variable name in netCDF file {{ hilight }}epp_spe_filepath{{ closehilight }} which contains
ion pairs production rates.
Default: None.
</entry>

<entry id="epp_mee_filepath" type="char*256" input_pathname="abs" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Filepath input dataset for ionization due to medium energy electrons.
Default: None.
</entry>
<entry id="epp_mee_varname" type="char*80" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Variable name in netCDF file {{ hilight }}epp_mee_filepath{{ closehilight }} which contains
ion pairs production rates.
Default: None.
</entry>

<entry id="epp_gcr_filepath" type="char*256" input_pathname="abs" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Filepath input dataset for ionization due to galactic cosmic rays.
Default: None.
</entry>
<entry id="epp_gcr_varname" type="char*80" category="waccm"
       group="epp_ionization_nl" valid_values="" >
Variable name in netCDF file {{ hilight }}epp_gcr_filepath{{ closehilight }} which contains
ion pairs production rates.
Default: None.
</entry>

<!-- SE dycore -->

<entry id="se_qsize_condensate_loading" type="integer" category="se"
       group="dyn_se_inparm" valid_values="1,2,3,4,5,6" >
Number of water tracers active in condensate-loading terms in dynamical core
1: water vapor only
2: water vapor and cloud liquid
3: water vapor, cloud liquid and cloud ice
4: water vapor, cloud liquid, cloud ice and rain
5: water vapor, cloud liquid, cloud ice, rain and snow
6: water vapor, cloud liquid, cloud ice, rain, snow and graupel
Default: 3 for CAM4, CAM5; 5 for CAM6; 1 for Held_Suarez, Adiabatic and Kessler
</entry>

<entry id="se_fine_ne" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Set for refined exodus meshes (variable viscosity).
Viscosity in namelist specified for regions with a resolution equivilant
to a uniform grid with se_ne = se_fine_ne.
Default: -1 (not used)
</entry>

<entry id="se_ftype" type="integer" category="se"
       group="dyn_se_inparm" valid_values="0,1,2" >
CAM physics forcing option:
0: tendencies
1: adjustments
2: hybrid
Default: Set by build-namelist.
</entry>

<entry id="se_hypervis_power" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Scalar viscosity with variable coefficient.
Use variable hyperviscosity based on element area limited by
se_max_hypervis_courant.
Default: 0
</entry>

<entry id="se_hypervis_scaling" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Use tensor hyperviscosity.
Citation: Guba, O., Taylor, M. A., Ullrich, P. A., Overfelt, J. R., and
Levy, M. N.: The spectral element method (SEM) on variable-resolution
grids: evaluating grid sensitivity and resolution-aware numerical
viscosity, Geosci. Model Dev., 7, 2803-2816,
doi:10.5194/gmd-7-2803-2014, 2014.
Default: 0 (i.e., not used)
</entry>

<entry id="se_hypervis_subcycle" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of hyperviscosity subcycles per dynamics timestep.
Default: Set by build-namelist
</entry>

<entry id="se_hypervis_subcycle_q" type="integer" category="se"
       group="dyn_se_inparm" valid_values="1" >
Number of hyperviscosity subcycles done in tracer advection code.
The only supported value in CAM is 1.
Default: Set by build-namelist.
</entry>

<entry id="se_limiter_option" type="integer" category="se"
       group="dyn_se_inparm" valid_values="0,4,8" >
Limiter used for horizontal tracer advection:
0: None
4: Sign-preserving limiter.
8: Monotone limiter.
Default: 8
</entry>

<entry id="se_max_hypervis_courant" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Upper bound for Courant number, used to limit se_hypervis_power.
Default: 1.0e99 (i.e., not used) unless se_refined_mesh=TRUE
</entry>

<entry id="se_mesh_file" type="char*256" input_pathname="abs" category="se"
       group="dyn_se_inparm" valid_values="" >
Filename of exodus file to read grid from (generated by CUBIT or SQuadGen).
Default: ""
</entry>

<entry id="se_ne" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of elements along a cube edge.
Must match value of grid. Set this to zero to use a refined mesh.
Default: Set by build-namelist.
</entry>

<entry id="se_npes" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of PEs to be used by SE dycore.
Default: Number of PEs used by CAM.
</entry>

<entry id="se_nsplit" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of dynamics steps per physics timestep.
Default: Set by build-namelist.
</entry>

<entry id="se_nu" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Hyperviscosity coefficient for u,v, T [m^4/s].
If &lt; 0, se_nu is automatically set.
Default: Set by build-namelist.
</entry>

<entry id="se_nu_div" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Hyperviscosity applied to divergence component of winds [m^4/s].
If &lt; 0, uses se_nu_p.
Default: Set by build-namelist.
</entry>

<entry id="se_nu_p" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Hyperviscosity coefficient applied to pressure-level thickness [m^4/s].
If &lt; 0, se_nu_p is automatically set.
Default: Set by build-namelist.
</entry>

<entry id="se_nu_top" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Second-order viscosity applied only near the model top [m^2/s].
Default: Set by build-namelist.
</entry>

<entry id="se_hypervis_on_plevs" type="logical" category="se"
       group="dyn_se_inparm" valid_values="" >
If TRUE hyperviscosity operators for u,v,T are applied on approximate pressure levels
If TRUE and se_nu_p>0 then hyperviscosity is also applied to difference between a
reference dp and dp
If FALSE all hyperviscosity operators are applied on eta levels
Default: TRUE
</entry>

<entry id="se_qsplit" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Tracer advection is done every qsplit dynamics timesteps.
Default: Set by build-namelist.
</entry>

<entry id="se_refined_mesh" type="logical" category="se"
       group="dyn_se_inparm" valid_values="" >
TRUE specified use of a refined grid (mesh) for this run.
Default: FALSE
</entry>

<entry id="se_rsplit" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Vertically lagrangian code vertically remaps every rsplit tracer timesteps.
Default: Set by build-namelist.
</entry>

<entry id="se_statefreq" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Frequency with which diagnostic output is written to log (output every
statefreq dynamics timesteps).
Default: Set by build-namelist.
</entry>

<entry id="se_tstep_type" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Time stepping method for SE dycore
se_tstep_type=1  RK2 followed by qsplit-1 Leapfrog steps; second-order accurate in time (CESM1.2.0 setting)
se_tstep_type=2  RK2-SSP 3 stage (as used by tracers)
se_tstep_type=3  classic Runga-Kutta (RK) 3 stage
se_tstep_type=4  Kinnmark&amp;Gray Runga-Kutta (RK) 4 stage
Default: 4
</entry>

<entry id="se_statediag_numtrac" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of tracers to include in logfile diagnostics for SE dycore
Default: 3
</entry>

<entry id="se_vert_remap_q_alg" type="integer" category="se"
    group="dyn_se_inparm" valid_values="0,1,2">
CAM-SE vertical remap algorithm
0: Zerroukat monotonic splines
1: PPM vertical remap with mirroring at the boundaries
   (solid wall bc's, high-order throughout)
2: PPM vertical remap without mirroring at the boundaries
   (no bc's enforced, first-order at two cells bordering top and bottom
   boundaries)
Default: Set by build-namelist.
</entry>

<entry id="se_write_restart_unstruct" type="logical" category="se"
       group="dyn_se_inparm" valid_values="" >
Set .true. to allow writing SE dynamics fields to the restart file using the
unstructured grid format.  This allows the restart file to be used as an
initial file, but its use as a restart file will introduce roundoff size
differences into the simulation.
Default: .false.
</entry>

<!-- Nudging -->
<entry id="se_met_nudge_u" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Nudging factor for prescribed winds in SE dycore
Units: 1/sec
Default: 2e-5
</entry>

<entry id="se_met_nudge_t" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Nudging factor for prescribed temperature in SE dycore
Units: 1/sec
Default: 2e-5
</entry>

<entry id="se_met_nudge_p" type="real" category="se"
       group="dyn_se_inparm" valid_values="" >
Nudging factor for prescribed surface pressure in SE dycore
Units: 1/sec
Default: 0.0
</entry>

<entry id="se_met_tevolve" type="integer" category="se"
       group="dyn_se_inparm" valid_values="0,1" >
Switch to turn on/off time evolution of dynamics nudging
Default: 0
</entry>

<!-- Physics grid entries -->
<entry id="se_fv_nphys" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of equally-spaced horizontal physics points per spectral
element. A number greater than zero will define [se_fv_nphys] equally
spaced physics points in each direction (e.g., se_fv_nphys = 3 will
result in 9 equally-spaced physics points per element).
Default: 0 = feature disabled, use dynamics GLL points.
</entry>

<!-- Option to write SCRIP grid file -->
<entry id="se_write_grid_file" type="char*16" category="se"
       group="dyn_se_inparm" valid_values="no,SCRIP" >
If 'SCRIP', write a NetCDF file with the grid in SCRIP format.
If using a finite-volume physics grid, write the FVM grid, otherwise
write the native GLL grid.
Note that if this option is used, the simulation will exit after writing.
Default: 'no'
</entry>

<entry id="se_grid_filename" type="char*256" category="se"
       group="dyn_se_inparm" valid_values="" >
Name of grid file to write if se_write_grid_file is set.
Default: Set according to active grid
</entry>

<entry id="se_write_gll_corners" type="logical" category="se"
       group="dyn_se_inparm" valid_values="" >
Set to true to write the SEMapping.nc file.
Default: .false.
</entry>

<entry id="native_mapping_outgrids" type="char*256(5)" category="se"
       group="native_mapping_nl" valid_values="" >
List of SCRIP grid filenames each representing a destination grid. If provided during a CAM simulation running the spectral element dycore, mapping files will be created from the native cubed-sphere grid to each destination grid. Both native mapping (using the internal spectral element basis functions) and bilinear maps are created.
Default: none
</entry>

<!-- SE performance (threading) entries -->
<entry id="se_horz_num_threads" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of threads to use for loops over elements.
Default: Set by build-namelist.
</entry>

<entry id="se_vert_num_threads" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of threads to use when processing vertical loops. Normally
equal to se_tracer_num_threads.
Default: Set by build-namelist.
</entry>

<entry id="se_tracer_num_threads" type="integer" category="se"
       group="dyn_se_inparm" valid_values="" >
Number of threads to use when processing loops over threads.
Normally equal to se_vert_num_threads.
Default: Set by build-namelist.
</entry>

<!-- Dycore testing  -->

<entry id="analytic_ic_type" type="char*80" category="dyn_test"
       group="analytic_ic_nl"
       valid_values="none,held_suarez_1994,moist_baroclinic_wave_dcmip2016,dry_baroclinic_wave_dcmip2016,dry_baroclinic_wave_jw2006" >
Specify the type of analytic initial conditions for an initial run.
held_suarez_1994: Initial conditions specified in Held and Suarez (1994)
moist_baroclinic_wave_dcmip2016: Moist baroclinic wave as used in the DCMIP 2016 experiments
dry_baroclinic_wave_dcmip2016: Dry baroclinic wave as used in the DCMIP 2016 experiments
dry_baroclinic_wave_jw2006: Dry baroclinic wave as specified in Jablonowski and Williamson (2006)
Default: 'none'
</entry>

<!-- PIO  -->

<entry id="pio_stride" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: 4
</entry>

<entry id="pio_root" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: 1
</entry>

<entry id="pio_numiotasks" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: -1
</entry>

<entry id="pio_typename" type="char*80" category="pio"
       group="pio_default_inparm" valid_values="netcdf,pnetcdf,netcdf4p,netcdf4c" >
Default: "netcdf"
</entry>

<entry id="pio_async_interface" type="logical" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: .false.
</entry>

<entry id="pio_debug_level" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: 0
</entry>

<entry id="pio_blocksize" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: -1
</entry>

<entry id="pio_buffer_size_limit" type="integer" category="pio"
       group="pio_default_inparm" valid_values="" >
Default: 0
</entry>

<entry id="pio_rearranger" type="integer" category="pio"
       group="pio_default_inparm" valid_values="1,2" >
pio_rearranger = 1 for box rearranger
               = 2 for subset rearranger
Default: box rearranger used by pio1, subset is default for pio2.
</entry>

<!-- DOCN -->

<entry id="restfilm" type="char*256" input_pathname="abs" category="restart"
       group="docn_nml" valid_values="" >
Full pathname of docn restart file.
Default: set by build-namelist.
</entry>

<entry id="decomp" type="char*24" category="ocn"
       group="docn_nml" valid_values="" >
Full pathname of docn restart file.
Default: set by build-namelist.
</entry>

<entry id="force_prognostic_true" type="logical" category="ocn"
       group="docn_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="dataMode" type="char*256" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="domainFile" type="char*256" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="fillalgo" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="fillmask" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="mapalgo" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="mapmask" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="streams" type="char*256" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="taxmode" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="tintalgo" type="char*32" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="vectors" type="char*256" category="ocn"
       group="shr_strdata_nml" valid_values="" >
Default: set by build-namelist.
</entry>

<!-- Specify ocean data and domain files in a component independent way. -->
<!-- build-namelist associates this information with the component       -->
<!-- dependend variables.                                                -->

<entry id="bndtvs" type="char*256" input_pathname="abs" category="ocn"
       group="camexp" valid_values="" >
Full pathname of time-variant sea-surface temperature and sea-ice
concentration boundary dataset.
Default: set by build-namelist.
</entry>

<entry id="focndomain" type="char*256" input_pathname="abs" category="ocn"
       group="camexp" valid_values="" >
Full pathname of
Default: set by build-namelist.
</entry>

<entry id="bndtvs_domain" type="char*256" input_pathname="abs" category="ocn"
       group="camexp" valid_values="" >
Full pathname of grid file for time-variant sea-surface temperature and sea-ice
concentration boundary dataset.
Default: set by build-namelist.
</entry>

<!-- CICE: These variables are passed through to the CICE build-namelist.   -->
<!--       They are provided here for convenience in setting up AMIP runs.  -->

<entry id="stream_year_first" type="integer" category="ice"
       group="camexp" valid_values="" >
The first year of the multi-year SST dataset which is read by CICE for
the prescribed ice fraction.  This needs to be set for AMIP simulations.
Default: 0
</entry>

<entry id="stream_year_last" type="integer" category="ice"
       group="camexp" valid_values="" >
The last year of the multi-year SST dataset which is read by CICE for
the prescribed ice fraction.  This needs to be set for AMIP simulations.
Default: 0
</entry>

<!-- DOM (CAM version) -->

<entry id="dom_branch_file" type="char*256" category="restart"
       group="dom_inparm" valid_values="">
Full pathname of master restart file from which to branch. Setting is
Required for branch run.
Default: none
</entry>

<entry id="sstcyc" type="logical" category="ocn"
       group="dom_inparm" valid_values="" >
Flag for yearly cycling of SST data. If set to FALSE, a multi-year dataset
is assumed, otherwise a single-year dataset is assumed, and SSTs will be
cycled over the first 12 values in the file.  This variable is only recognized
by the old CAM DOM component.
Default: TRUE
</entry>

<!-- ========================================================================================  -->
<!-- Rename component log files.  shr_file_mod::shr_file_setIO reads
     namelist /modelio/.  These variables in group camexp are treated
     specially in build-namelist, where they are put into the modelio
     namelist group in files with specific names that are read by each
     component.  -->

<entry id="atm_logfile" type="char*256" category="driver"
       group="camexp" valid_values="">
Name of file that the atmosphere component log messages will be written to.  By
default all log messages are written to stdout.
Default: ""
</entry>

<entry id="atm_logfile_diro" type="char*256" category="driver"
       group="camexp" valid_values="">
Absolute pathname of directory that the file specified by {{ hilight }}atm_logfile{{ closehilight }}
will be written to.
Default: "."
</entry>

<entry id="cpl_logfile" type="char*256" category="driver"
       group="camexp" valid_values="">
Name of file that the driver component log messages will be written to.  By
default all log messages are written to stdout.
Default: ""
</entry>

<entry id="cpl_logfile_diro" type="char*256" category="driver"
       group="camexp" valid_values="">
Absolute pathname of directory that the file specified by {{ hilight }}cpl_logfile{{ closehilight }}
will be written to.
Default: "."
</entry>

<entry id="lnd_logfile" type="char*256" category="driver"
       group="camexp" valid_values="">
Name of file that the land component log messages will be written to.  By
default all log messages are written to stdout.
Default: ""
</entry>

<entry id="lnd_logfile_diro" type="char*256" category="driver"
       group="camexp" valid_values="">
Absolute pathname of directory that the file specified by {{ hilight }}lnd_logfile{{ closehilight }}
will be written to.
Default: "."
</entry>

<entry id="rof_logfile" type="char*256" category="driver"
       group="camexp" valid_values="">
Name of file that the runoff component log messages will be written to.  By
default all log messages are written to stdout.
Default: ""
</entry>

<entry id="rof_logfile_diro" type="char*256" category="driver"
       group="camexp" valid_values="">
Absolute pathname of directory that the file specified by {{ hilight }}rof_logfile{{ closehilight }}
will be written to.
Default: "."
</entry>


<!-- ========================================================================================  -->
<!-- CIME Driver -->

<entry id="ninst_driver" type="integer"  category="driver"
       group="cime_driver_inst" valid_values="1" >
Default: 1
</entry>

<!-- coupler fields -->

<entry id="flds_co2a" type="logical"  category="driver"
       group="seq_cplflds_inparm" valid_values="" >
Default: FALSE
</entry>
<entry id="flds_co2b" type="logical"  category="driver"
       group="seq_cplflds_inparm" valid_values="" >
Default: FALSE
</entry>
<entry id="flds_co2c" type="logical"  category="driver"
       group="seq_cplflds_inparm" valid_values="" >
Default: FALSE
</entry>
<entry id="flds_co2_dmsa" type="logical"  category="driver"
       group="seq_cplflds_inparm" valid_values="" >
Default: FALSE
</entry>
<entry id="flds_co2_dmsb" type="logical"  category="driver"
       group="seq_cplflds_inparm" valid_values="" >
Default: FALSE
</entry>
<entry id="cplflds_custom" type="char*80"  category="driver"
       group="seq_cplflds_userspec" valid_values="" >
Default:
</entry>

<!-- Task/Thread layouts -->

<entry id="atm_pestride" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Stride used in selecting the processes in the atm communicator group.
Default: 1
</entry>

<entry id="atm_rootpe" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Root process of the atm communicator group.
Default: 0
</entry>

<entry id="atm_ntasks" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of atm tasks.
Default: total number of tasks assigned to job.
</entry>

<entry id="atm_nthreads" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of threads in each atm task.
Default: 1
</entry>


<entry id="ocn_pestride" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Stride used in selecting the processes in the ocn communicator group.
Default: 1
</entry>

<entry id="ocn_rootpe" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Root process of the ocn communicator group.
Default: 0
</entry>

<entry id="ocn_ntasks" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of ocn tasks.
Default: total number of tasks assigned to job.
</entry>

<entry id="ocn_nthreads" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of threads in each ocn task.
Default: 1
</entry>

<entry id="cpl_pestride" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Stride used in selecting the processes in the cpl communicator group.
Default: 1
</entry>

<entry id="cpl_rootpe" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Root process of the cpl communicator group.
Default: 0
</entry>

<entry id="cpl_ntasks" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of cpl tasks.
Default: total number of tasks assigned to job.
</entry>

<entry id="cpl_nthreads" type="integer"  category="driver"
       group="cime_pes" valid_values="" >
Number of threads in each cpl task.
Default: 1
</entry>

<!-- Control info -->

<entry id="aqua_planet" type="logical"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
If true, run model in "aqua planet" mode. Only one of
{{ hilight }}atm_adiabatic{{ closehilight }}, {{ hilight }}atm_ideal_phys{{ closehilight }}, or
{{ hilight }}aqua_planet{{ closehilight }} can be true.
Default: FALSE
</entry>

<entry id="aqua_planet_sst" type="integer"  category="driver"
       group="aquap_nl" valid_values="1,2,3,4,5,6,7,8,9,10" value="1" >
Set the sst to a particular analytic solution.
Default: 1
</entry>

<entry id="atm_dep_flux" type="logical" category="driver"
       group="phys_ctl_nl" valid_values="" >
If FALSE then CAM will set the deposition fluxes to zero before sending
them to the coupler.  A side effect of setting the
variable {{ hilight }}chem_rad_passive{{ closehilight }} to TRUE is that this variable
will be set to FALSE (the deposition fluxes must be set to zero in order
for the chemistry not to impact the climate).
Default: TRUE
</entry>

<entry id="bfbflag" type="logical"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
bit for bit flag
Default: FALSE
</entry>

<entry id="brnch_retain_casename" type="logical"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
If TRUE, use the pre-existing case name for a branch run.
Default: FALSE
</entry>

<entry id="budget_ann" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
annual budget level
Default: 1
</entry>

<entry id="budget_daily" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
daily budget level
Default: 0
</entry>

<entry id="budget_inst" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
instantaneous budget level
Default: 0
</entry>

<entry id="budget_ltann" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
long term budget level written at end of year
Default: 1
</entry>

<entry id="budget_ltend" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
long term budget level written at end of run
Default: 0
</entry>

<entry id="budget_month" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
monthly budget level
Default: 1
</entry>

<entry id="case_desc" type="char*256"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Case title.
Default: none.
</entry>

<entry id="cime_model" type="char*4"  category="driver"
       group="seq_infodata_inparm" valid_values="cesm, acme" >
cime model version.
Default: cesm.
</entry>

<entry id="coldair_outbreak_mod" type="logical"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Enable cold air outbreak modification based on Mahrt and Sun, MWR, 1995.
Default: TRUE
</entry>

<entry id="gust_fac" type="integer"  category="driver"
       group="seq_infodata_inparm" valid_values="0" >
gust_fac value - for CESM is 0
Default: 0.
</entry>

<entry id="case_name" type="char*80"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Case identifier.  The value of {{ hilight }}case_name{{ closehilight }} is used in the
default filenames of both the history and restart files (see
the {{ hilight }}hfilename_spec{{ closehilight }} namelist option).  The "%c" string in
the {{ hilight }}hfilename_spec{{ closehilight }} templates are expanded using the
value of {{ hilight }}case_name{{ closehilight }} when history filenames are created.
Default: set by build-namelist.
</entry>

<entry id="cpl_cdf64" type="logical"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Use netcdf 64 bit offset, large file support.
Default: FALSE
</entry>

<entry id="do_budgets" type="logical" category="driver"
       group="seq_infodata_inparm" valid_values="" >
T =&gt; do heat/water budget diagnostics
Default: FALSE
</entry>

<entry id="drv_threading" type="logical" category="driver"
       group="seq_infodata_inparm" valid_values="" >
T =&gt; enable run time setting of thread count for each component
Default: FALSE
</entry>

<entry id="flux_albav" type="logical" category="driver"
       group="seq_infodata_inparm" valid_values="" >
T =&gt; no diurnal cycle in ocn albedos.
Default: FALSE
</entry>

<entry id="flux_epbal" type="char*256" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Selects E,P,R adjustment technique.
Default: 'off'
</entry>

<entry id="flux_max_iteration" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Default: 5
</entry>

<entry id="hostname" type="char*80"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Current machine.
Default: 'unknown'
</entry>

<entry id="info_debug" type="integer" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Debug flag.
Default: 1
</entry>

<entry id="logfilepostfix" type="char*80" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Postfix for output log files.
Default: '.log'
</entry>

<entry id="model_version" type="char*256"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Model version.
Default: 'unknown'
</entry>

<entry id="cpl_seq_option" type="char"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Coupler sequence option - CESM1_MOD_TIGHT is identical to old ocean_tight_coupling.
Default: 'CESM1_MOD_TIGHT'
</entry>

<entry id="orb_eccen" type="real"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Earth's eccentricity of orbit. (unitless: typically 0. to 0.1). Setting is
Required if {{ hilight }}orb_iyear{{ closehilight }} not set.  Not used when running
as part of CCSM.
Default: none
</entry>

<entry id="orb_mode" type="char*256"  category="driver"
       group="seq_infodata_inparm" valid_values="fixed_year,variable_year,fixed_parameters" >
Mode to specify how orbital parameters are to be set.
Not used when running as part of CCSM.
Default: fixed_year
</entry>

<entry id="orb_iyear" type="integer"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Year (AD) used to compute earth's orbital parameters. If not set, then use
the values from
the {{ hilight }}orb_eccen{{ closehilight }}, {{ hilight }}orb_mvelp{{ closehilight }},
and {{ hilight }}orb_obliq{{ closehilight }} namelist parameters.  If only
{{ hilight }}orb_iyear{{ closehilight }} is set, orbital parameters will be computed
automatically (based on Berger, 1977).  If one
of {{ hilight }}orb_eccen{{ closehilight }}, {{ hilight }}orb_mvelp{{ closehilight }}, or
{{ hilight }}orb_obliq{{ closehilight }} is set, all three must be set.  If all four of
the above are set by the user, {{ hilight }}orb_iyear{{ closehilight }} takes
precedence.  Setting is Required
unless {{ hilight }}orb_eccen{{ closehilight }}, {{ hilight }}orb_mvelp{{ closehilight }},
and {{ hilight }}orb_obliq{{ closehilight }} are set.  Not used when running as part of
CCSM.
Default: 1990.
</entry>

<entry id="orb_mvelp" type="real"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Earth's moving vernal equinox at perihelion (degrees: 0. to 360.0).
Setting is Required if {{ hilight }}orb_iyear{{ closehilight }} not set.  Not used
when running as part of CCSM.
Default: none
</entry>

<entry id="orb_obliq" type="real"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Earth's orbital  angle of obliquity  (degrees: -90. to +90., typically 22. to 26.).
Setting is Required if {{ hilight }}orb_iyear{{ closehilight }} not set.  Not used
when running as part of CCSM.
Default: none
</entry>

<entry id="outpathroot" type="char*256" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Root output files
Default: './'
</entry>

<entry id="perpetual" type="logical"  category="time_mgr"
       group="seq_infodata_inparm" valid_values="" >
Set to TRUE to specify that the run will use a perpetual calendar, i.e., a
diurnal cycle will be present for the fixed calendar day specified
by {{ hilight }}perpetual_ymd{{ closehilight }}.
Default: FALSE
</entry>

<entry id="perpetual_ymd" type="integer"  category="time_mgr"
       group="seq_infodata_inparm" valid_values="" >
Perpetual date encoded in an integer as (year*1000 + month*100 + day).
If {{ hilight }}aqua_planet{{ closehilight }} = .true. then perpetual_ymd is ignored
and the perpetual date is set to 321.
Default: none.
</entry>

<entry id="restart_file" type="char*256" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Restart filename.
Default: none
</entry>

<entry id="restart_file_override" type="char*256" category="driver"
       group="seq_infodata_inparm" valid_values="" >
List of namelist variables that may be overridden on a restart run.
Default: none
</entry>

<entry id="restart_pfile" type="char*256" category="driver"
       group="seq_infodata_inparm" valid_values="" >
Restart pointer filename.
Default: 'rpointer.drv'
</entry>

<entry id="samegrid" type="logical" category="driver"
       group="seq_infodata_inparm" valid_values="">
are ocean and ice grids same lat/lon/size
Default: TRUE
</entry>

<entry id="scmlat" type="real" category="scam"
       group="seq_infodata_inparm" valid_values="">
Latitude value of single column.
Default: none.
</entry>

<entry id="scmlon" type="real" category="scam"
       group="seq_infodata_inparm" valid_values="">
Longitude value of single column.
Default: none.
</entry>

<entry id="single_column" type="logical" category="scam"
       group="seq_infodata_inparm" valid_values="">
Set to TRUE to turn on single column mode.
Default: FALSE
</entry>

<entry id="start_type" type="char*8"  category="driver"
       group="seq_infodata_inparm" valid_values="startup,continue,branch" >
Run type.  'startup' is an initial run.  'continue' is a restart run.
'branch' is a restart run in which properties of the output history files
may be changed.
Default: 'startup'
</entry>

<entry id="username" type="char*80"  category="driver"
       group="seq_infodata_inparm" valid_values="" >
Current user.
Default: 'unknown'
</entry>

<entry id="vect_map" type="char*8"  category="driver"
       group="seq_infodata_inparm" valid_values="none,cart3d,cart3d_diag,cart3d_uvw,cart3d_uvw_diag" >
Invoke vector mapping option
Default: 'cart3d'
</entry>

<!-- Reproducible Distributed Sum Calculation -->

<entry id="reprosum_use_ddpdd" type="logical"  category="reprosum"
       group="seq_infodata_inparm" valid_values="">
Flag to indicate whether to use the double-double distributed sum algorithm
rather than the (almost) infinite precision reproducible distributed sum algorithm.
Default: FALSE
</entry>

<entry id="reprosum_recompute" type="logical"  category="reprosum"
       group="seq_infodata_inparm" valid_values="">
Flag to indicate whether a distributed sum that violates the difference
tolerance specified by reprosum_diffmax should be recomputed using
a floating point-based (but nonscalable) reproducible algorithm.
Default: FALSE
</entry>

<entry id="reprosum_diffmax" type="real"  category="reprosum"
       group="seq_infodata_inparm" valid_values="">
Relative difference between repro and nonrepro algorithms that will
generate a warning. This will also force a recompute using a nonscalable
algorithm if reprosum_recompute is true. If less than zero, then
the difference will not be evaluated (and the nonrepro algorithm will not
be computed).
Default: -1.0
</entry>

<!-- Time Manager -->

<entry id="atm_cpl_dt" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Coupling interval between the atmosphere and other system components.  This
is how frequently information can be communicated between the atmosphere
and the surface models.
Default: set by build-namelist.
</entry>

<entry id="calendar" type="char*80"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="NO_LEAP,GREGORIAN" >
Calendar type "NO_LEAP" for consistent 365-days per year or "GREGORIAN" to
include leap-years. Note that if "GREGORIAN" is selected
leap-years will be used in the time manager, but the calculation of the
earth's orbit still assumes 365 day years.  Valid values are "NO_LEAP" or
"GREGORIAN".
Default: "NO_LEAP"
</entry>

<entry id="end_restart" type="logical"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Write restart at end of run.
Default: TRUE
</entry>

<entry id="ice_cpl_dt" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="ice_cpl_offset" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default:
</entry>

<entry id="lnd_cpl_dt" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="lnd_cpl_offset" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default:
</entry>

<entry id="ocn_cpl_dt" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="ocn_cpl_offset" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default:
</entry>

<entry id="rof_cpl_dt" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default: set by build-namelist.
</entry>

<entry id="rof_cpl_offset" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Default:
</entry>

<entry id="ref_tod" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Reference time-of-day expressed as seconds past midnight.  Used in
conjuction with {{ hilight }}ref_ymd{{ closehilight }} to set the reference time.
Default: set to {{ hilight }}start_tod{{ closehilight }}.
</entry>

<entry id="ref_ymd" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Reference date encoded in an integer as (year*1000 + month*100 + day).
Used in
conjuction with {{ hilight }}ref_tod{{ closehilight }} to set the reference time which
is used to define a time coordinate for the output history files.  The
convention for the unit string of a time coordinate is of the form
"time-unit since reference-time", for example, "days since 1990-01-01
00:00:00".  The reference-time part of this string is specified by the
{{ hilight }}ref_ymd{{ closehilight }} and {{ hilight }}ref_tod{{ closehilight }} variables.

Default: set to {{ hilight }}start_ymd{{ closehilight }}.
</entry>

<entry id="restart_n" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Set the restart interval as a number of elapsed time units which are specified
by {{ hilight }}restart_option{{ closehilight }}.
Default: 1
</entry>

<entry id="restart_option" type="char*8"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="none,nsteps,ndays,nmonths,nyears,monthly,yearly,end" >
Set the interval between writing restart files
using one of the options 'nsteps',
'ndays', 'nmonths', or 'nyears', in conjuction
with {{ hilight }}stop_n{{ closehilight }} to set the number of time units.
A convenience option allows specifying that restart files be written at the
end of each month or at the end of each year by using the options
'monthly' or 'yearly' respectively.  It is also possible to request that no
restart files be written via the option 'none', or that restart files be
written only at the end of the run via the option 'end'.
Default: 'monthly'
</entry>

<entry id="start_tod" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Start time-of-day expressed as seconds past midnight.  Used in
conjuction with {{ hilight }}start_ymd{{ closehilight }} to set the start time.
Default: 0.
</entry>

<entry id="start_ymd" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Start date encoded in an integer as (year*1000 + month*100 + day).
Used in
conjuction with {{ hilight }}start_tod{{ closehilight }} to set the start date of
the simulation.
Default: set by build-namelist.
</entry>

<entry id="stop_n" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Set the length of run as a number of elapsed time units which are specified
by {{ hilight }}stop_option{{ closehilight }}.
Default: 1
</entry>

<entry id="stop_option" type="char*8"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="nsteps,nhours,ndays,nmonths,nyears,date" >
Set the length of run as an elapsed time using one of the options 'nsteps',
'ndays', 'nmonths', or 'nyears', in conjuction
with {{ hilight }}stop_n{{ closehilight }} to set the number of elapsed time units.
Alternatively, set the final simulation time in absolute terms by using the
option 'date' in conjuction with {{ hilight }}stop_ymd{{ closehilight }},
and {{ hilight }}stop_tod{{ closehilight }} to specify a date and time of day at which
the simulation should stop.
Default: 'ndays'
</entry>

<entry id="stop_tod" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Stop time-of-day expressed as seconds past midnight.  Used in
conjuction with {{ hilight }}stop_ymd{{ closehilight }} to set the stop time.
Default: 0.
</entry>

<entry id="stop_ymd" type="integer"  category="time_mgr"
       group="seq_timemgr_inparm" valid_values="" >
Stop date encoded in an integer as (year*1000 + month*100 + day).
Used in
conjuction with {{ hilight }}stop_tod{{ closehilight }} to set the stop date of
the simulation.
Default: none.
</entry>

<entry id="sim_year" type="char*9" category="cam"
       group="camexp" valid_values="1850,2000,1850-2000">
This varible is only used internally by build-namelist to determine
appropriate defaults for climatological or transient forcing datasets.
Default: set by build-namelist.
</entry>

<!-- ========================================================================================  -->
<!-- physical constants: -->

<entry id="sday" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Length of siderial day [seconds].
Default: set to shr_const value
</entry>

<entry id="rearth" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Radius of Earth [m].
Default: set to shr_const value
</entry>

<entry id="gravit" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Acceleration of gravity [m/s**2].
Default: set to shr_const value
</entry>

<entry id="mwdry" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Molecular weight of dry air [g/mol]
Default: set to shr_const value
</entry>

<entry id="cpair" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Heat capacity of dry air at constant pressure [J/kg/K].
Default: set to shr_const value
</entry>

<entry id="mwh2o" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Molecular weight of water [g/mol].
Default: set to shr_const value
</entry>

<entry id="cpwv" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Heat capacity of water vapor at constant pressure [J/kg/K].
Default: set to shr_const value
</entry>

<entry id="tmelt" type="real" category="physconst"
       group="physconst_nl" valid_values="" >
Freezing point of water [K].
Default: set to shr_const value
</entry>

<!-- for offine unit drivers -->

<entry id="offline_driver_infile" type="char*256" input_pathname="abs" category="offline_unit_driver"
       group="offline_driver_nl" valid_values="" >
Filepath for dataset for offline unit driver.
Default: none
</entry>

<entry id="offline_driver_fileslist" type="char*256" input_pathname="abs" category="offline_unit_driver"
       group="offline_driver_nl" valid_values="" >
List of filepaths for dataset for offline unit driver.
Default: none
</entry>

<!-- CAM-Oslo variables  -->

<entry id="volc_fraction_coarse" type="real" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Fraction of volcanic aerosols which will end up in coarse mode
Default: 0.0
</entry>
<entry id="aerotab_table_dir" type="char*256" input_pathname="abs" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Directory where we will expect to find the CAM-Oslo tables
created from AeroTab
</entry>

<entry id="aerocomk0_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk1_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk2_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk3_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk4_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk5_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk6_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk7_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk8_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk9_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerocomk10_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>

<entry id="aerodryk0_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk1_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk2_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk3_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk4_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk5_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk6_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk7_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk8_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk9_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="aerodryk10_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>

<entry id="kcomp0_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp1_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp2_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp3_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp4_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp5_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp6_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp7_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp8_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp9_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="kcomp10_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>

<entry id="logntilp1_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp2_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp3_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp4_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp5_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp6_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp7_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp8_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp9_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="logntilp10_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>

<entry id="lwkcomp0_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp1_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp2_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp3_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp4_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp5_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp6_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp7_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp8_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp9_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>
<entry id="lwkcomp10_file" type="char*256" input_pathname="abs" category="cam_oslo" group="aerotab_ctl_nl" valid_values="" > AeroTab file</entry>

<entry id="dms_source" type="char*20" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Type of DMS data source
Default: emission_file
</entry>

<entry id="dms_source_type" type="char*32" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Type of DMS data source type
Default: CYCLICAL
</entry>

<entry id="dms_cycle_year" type="integer" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
DMS cycle year
Default: 2000
</entry>

<entry id="opom_source" type="char*20" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Type of ocean POM data source
Default: no_file
</entry>

<entry id="opom_source_type" type="char*32" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Type of ocean POM data source type
Default: CYCLICAL
</entry>

<entry id="opom_cycle_year" type="integer" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Ocean POM cycle year
Default: 2000
</entry>

<entry id="ocean_filename" type="char*256" input_pathname="rel:ocean_filepath" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Filename for ocean concentration of DMS, chlorophyll and poc
Default: name
</entry>

<entry id="ocean_filepath" type="char*256" input_pathname="abs" category="cam_oslo"
       group="oslo_ctl_nl" valid_values="" >
Path to ocean file
Default: path
</entry>

</namelist_definition>