Change OCN2GLC_TF_SMAPNAME files to include extrapolation

Both Greenland meshes currently have issues that cause problems when
using OCN2GLC_TF_SMAPNAME mapping files that don't have extrapolation.
For the gis4to40 mesh, there is an "inland sea" region that does not get
valid ocean thermal forcing, leading to MALI errors in facemelting.
Here, I've switched the map file to one that includes extrapolation to
work around this issue.  The inland sea problem is being fixed in a
different PR, and after that is merged, this map file can be switched
back to the version without extrapolation, so that the bathymetry-aware
extrapolation inside of MALI can be used instead.

The gis1to10kmR2 mesh has a different problem - the ocean "gutter" is
too narrow and only overlaps the IcoswISC30E3r5 grid in a few places.
Switching to a OCN2GLC_TF_SMAPNAME mapping file that includes
extrapolation similarly works around this problem.  A more thorough
solution will require creating a new high-res GIS mesh with a larger
gutter.

Author: matthewhoffman

cime_config/config_grids.xml

@@ -5962,7 +5962,10 @@
     <gridmap glc_grid="mpas.gis4to40km" ocn_grid="oQU240wLI">
       <map name="OCN2GLC_SHELF_FMAPNAME">cpl/gridmaps/oQU240wLI/map_oQU240wLI_to_gis4to40_esmfaave.20250303.nc</map>
       <map name="OCN2GLC_SHELF_SMAPNAME">cpl/gridmaps/oQU240wLI/map_oQU240wLI_to_gis4to40_esmfbilin.20250303.nc</map>
-      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/oQU240wLI/map_oQU240wLI-nomask_to_gis4to40_esmfbilin.20250403.nc</map>
+      <!-- due to a known issue with ocean extrapolation in MALI, as of 2025-04-04 it is necessary to use a mapping file with
+           extrapolation included for OCN2GLC_TF_SMAPNAME.  After that is fixed, this file should be switched to the
+           version WITHOUT extrapolation:  map_oQU240wLI-nomask_to_gis4to40_esmfbilin.20250403.nc -->
+      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/oQU240wLI/map_oQU240wLI_to_gis4to40_esmfbilin.20250303.nc</map>
       <map name="GLC2ICE_FMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_oQU240wLI_esmfaave.20250303.nc</map>
       <map name="GLC2ICE_SMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_oQU240wLI_esmfaave.20250303.nc</map>
       <map name="GLC2OCN_FMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_oQU240wLI_esmfaave.20250303.nc</map>
@@ -5974,7 +5977,10 @@
     <gridmap glc_grid="mpas.gis4to40km" ocn_grid="IcoswISC30E3r5">
       <map name="OCN2GLC_SHELF_FMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis4to40_esmfaave.20250218.nc</map>
       <map name="OCN2GLC_SHELF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis4to40_esmfbilin.20250218.nc</map>
-      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5-nomask_to_gis4to40_esmfbilin.20250403.nc</map>
+      <!-- due to a known issue with ocean extrapolation in MALI, as of 2025-04-04 it is necessary to use a mapping file with
+           extrapolation includedi for OCN2GLC_TF_SMAPNAME.  After that is fixed, this file should be switched to the
+           version WITHOUT extrapolation: map_IcoswISC30E3r5-nomask_to_gis4to40_esmfbilin.20250403.nc -->
+      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis4to40_esmfbilin.20250218.nc</map>
       <map name="GLC2ICE_FMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_IcoswISC30E3r5_esmfaave.20250218.nc</map>
       <map name="GLC2ICE_SMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_IcoswISC30E3r5_esmfaave.20250218.nc</map>
       <map name="GLC2OCN_FMAPNAME">cpl/gridmaps/mpas.gis4to40km/map_gis4to40_to_IcoswISC30E3r5_esmfaave.20250218.nc</map>
@@ -6076,7 +6082,10 @@
     <gridmap glc_grid="mpas.gis1to10kmR2" ocn_grid="IcoswISC30E3r5">
       <map name="OCN2GLC_SHELF_FMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis1to10kmR2_esmfaave.20240403.nc</map>
       <map name="OCN2GLC_SHELF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis1to10kmR2_esmfbilin.20240403.nc</map>
-      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5-nomask_to_gis1to10r02_esmfbilin.20250403.nc</map>
+      <!-- due to the "ocean gutter" on mpas.gis1to10kmR2 being very narrow, it is necessary to use a mapping file with
+           extrapolation included for OCN2GLC_TF_SMAPNAME.  Switching to a mapping file without extrapolation would require a new
+           GLC mesh with an ocean gutter that has sufficient overlap with IcoswISC30E3r5. -->
+      <map name="OCN2GLC_TF_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_gis1to10kmR2_esmfbilin.20240403.nc</map>
       <map name="GLC2ICE_FMAPNAME">cpl/gridmaps/mpas.gis1to10km/map_gis1to10kmR2_to_IcoswISC30E3r5_esmfaave.20240403.nc</map>
       <map name="GLC2ICE_SMAPNAME">cpl/gridmaps/mpas.gis1to10km/map_gis1to10kmR2_to_IcoswISC30E3r5_esmfaave.20240403.nc</map>
       <map name="GLC2OCN_FMAPNAME">cpl/gridmaps/mpas.gis1to10km/map_gis1to10kmR2_to_IcoswISC30E3r5_esmfaave.20240403.nc</map>