diff --git a/cime_config/config_grids.xml b/cime_config/config_grids.xml
index ddb1df949ac3..8dcfd80b9083 100755
--- a/cime_config/config_grids.xml
+++ b/cime_config/config_grids.xml
@@ -1160,6 +1160,16 @@
       <mask>IcoswISC30E3r5</mask>
     </model_grid>
 
+    <model_grid alias="eastasiax4v1pg2_r025_IcoswISC30E3r5">
+      <grid name="atm">ne0np4_eastasiax4v1.pg2</grid>
+      <grid name="lnd">r025</grid>
+      <grid name="ocnice">IcoswISC30E3r5</grid>
+      <grid name="rof">r025</grid>
+      <grid name="glc">null</grid>
+      <grid name="wav">null</grid>
+      <mask>IcoswISC30E3r5</mask>
+    </model_grid>
+
     <model_grid alias="northamericax4v1pg2_r0125_WC14to60E2r3" compset="(DOCN|XOCN|SOCN|AQP1|EAM.+ELM.+MPASO)">
       <grid name="atm">ne0np4_northamericax4v1.pg2</grid>
       <grid name="lnd">r0125</grid>
@@ -3399,7 +3409,7 @@
     <domain name="r025">
       <nx>1440</nx>
       <ny>720</ny>
-      <file grid="atm|lnd" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.lnd.r025_IcoswISC30E3r5.240129.nc</file>
+      <file grid="atm|lnd" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.lnd.r025_IcoswISC30E3r5.250923.nc</file>
       <file grid="atm|lnd" mask="RRSwISC6to18E3r5">$DIN_LOC_ROOT/share/domains/domain.lnd.r025_RRSwISC6to18E3r5.240402.nc</file>
       <desc>r025 is 1/4 degree river routing grid:</desc>
     </domain>
@@ -3546,7 +3556,15 @@
       <file grid="ice|ocn" mask="EC30to60E2r2">$DIN_LOC_ROOT/share/domains/domain.ocn.northamericax4v1pg2_EC30to60E2r2.220428.nc</file>
       <file grid="atm|lnd" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.lnd.northamericax4v1pg2_IcoswISC30E3r5.240416.nc</file>
       <file grid="ice|ocn" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.ocn.northamericax4v1pg2_IcoswISC30E3r5.240416.nc</file>
-      <desc>1-deg with 1/4-deg over North America (version 1) pg2:</desc>
+      <desc>1-deg with 1/4-deg over North America (version 1) pg2 as described in Tang et al. (2023):</desc>
+    </domain>
+
+    <domain name="ne0np4_eastasiax4v1.pg2">
+      <nx>48864</nx>
+      <ny>1</ny>
+      <file grid="atm|lnd" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.lnd.eastasiax4v1pg2_IcoswISC30E3r5.250805.nc</file>
+      <file grid="ice|ocn" mask="IcoswISC30E3r5">$DIN_LOC_ROOT/share/domains/domain.ocn.eastasiax4v1pg2_IcoswISC30E3r5.250805.nc</file>
+      <desc>1-deg with 1/4-deg over East Asia (version 1) pg2:</desc>
     </domain>
 
     <domain name="ne0np4_arcticx4v1.pg2">
@@ -4414,6 +4432,16 @@
       <map name="ATM2OCN_FMAPNAME_NONLINEAR">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_IcoswISC30E3r5_trfvnp2.20240331.nc</map>
     </gridmap>
 
+    <gridmap atm_grid="ne0np4_eastasiax4v1.pg2" ocn_grid="IcoswISC30E3r5">
+      <map name="ATM2OCN_FMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_IcoswISC30E3r5_traave.20250805.nc</map>
+      <map name="ATM2OCN_VMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_IcoswISC30E3r5_trbilin.20250805.nc</map>
+      <map name="ATM2OCN_SMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_IcoswISC30E3r5-nomask_trbilin.20250805.nc</map>
+      <map name="OCN2ATM_FMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_eastasiax4v1pg2_traave.20250805.nc</map>
+      <map name="OCN2ATM_SMAPNAME">cpl/gridmaps/IcoswISC30E3r5/map_IcoswISC30E3r5_to_eastasiax4v1pg2_traave.20250805.nc</map>
+      <map name="ATM2ICE_FMAPNAME_NONLINEAR">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_IcoswISC30E3r5_trfvnp2.20250805.nc</map>
+      <map name="ATM2OCN_FMAPNAME_NONLINEAR">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_IcoswISC30E3r5_trfvnp2.20250805.nc</map>
+    </gridmap>
+
     <gridmap atm_grid="ne0np4_northamericax4v1.pg2" lnd_grid="r0125">
       <map name="ATM2LND_FMAPNAME">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_r0125_mono.20200401.nc</map>
       <map name="ATM2LND_SMAPNAME">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_r0125_bilin.20200401.nc</map>
@@ -4429,6 +4457,14 @@
       <map name="LND2ATM_SMAPNAME">cpl/gridmaps/r025/map_r025_to_northamericax4v1pg2_traave.20240331.nc</map>
     </gridmap>
 
+    <gridmap atm_grid="ne0np4_eastasiax4v1.pg2" lnd_grid="r025">
+      <map name="ATM2LND_FMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_traave.20250805.nc</map>
+      <map name="ATM2LND_FMAPNAME_NONLINEAR">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_trfvnp2.20250805.nc</map>
+      <map name="ATM2LND_SMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_trbilin.20250805.nc</map>
+      <map name="LND2ATM_FMAPNAME">cpl/gridmaps/r025/map_r025_to_eastasiax4v1pg2_traave.20250805.nc</map>
+      <map name="LND2ATM_SMAPNAME">cpl/gridmaps/r025/map_r025_to_eastasiax4v1pg2_traave.20250805.nc</map>
+    </gridmap>
+
     <gridmap atm_grid="ne0np4_northamericax4v1.pg2" rof_grid="r0125">
       <map name="ATM2ROF_FMAPNAME">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_r0125_mono.20200401.nc</map>
       <map name="ATM2ROF_SMAPNAME">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_r0125_bilin.20200401.nc</map>
@@ -4445,6 +4481,12 @@
       <map name="ATM2ROF_SMAPNAME">cpl/gridmaps/northamericax4v1np4/map_northamericax4v1pg2_to_r025_trbilin.20240331.nc</map>
     </gridmap>
 
+    <gridmap atm_grid="ne0np4_eastasiax4v1.pg2" rof_grid="r025">
+      <map name="ATM2ROF_FMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_traave.20250805.nc</map>
+      <map name="ATM2ROF_FMAPNAME_NONLINEAR">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_trfvnp2.20250805.nc</map>
+      <map name="ATM2ROF_SMAPNAME">cpl/gridmaps/eastasiax4v1pg2/map_eastasiax4v1pg2_to_r025_trbilin.20250805.nc</map>
+    </gridmap>
+
     <gridmap atm_grid="ne0np4_arcticx4v1.pg2" ocn_grid="oARRM60to10">
       <map name="ATM2OCN_FMAPNAME">cpl/gridmaps/arcticx4v1pg2/map_arcticx4v1pg2_to_oARRM60to10_mono.20210407.nc</map>
       <map name="ATM2OCN_VMAPNAME">cpl/gridmaps/arcticx4v1pg2/map_arcticx4v1pg2_to_oARRM60to10_mono.20210407.nc</map>
diff --git a/cime_config/tests.py b/cime_config/tests.py
index 4c3984500dff..47d7ddb7098f 100644
--- a/cime_config/tests.py
+++ b/cime_config/tests.py
@@ -390,7 +390,7 @@
             "SMS_Ld1.ne30pg2_r05_IcoswISC30E3r5.WCYCL1850.allactive-wcprod_1850",
             "SMS_Ld1.ne30pg2_r05_IcoswISC30E3r5.WCYCLSSP370.allactive-wcprodssp",
             "SMS_Ld1.ne30pg2_r05_IcoswISC30E3r5.WCYCLSSP585.allactive-wcprodssp",
-            "SMS_Ld1_PS.northamericax4v1pg2_WC14to60E2r3.WCYCL1850.allactive-wcprodrrm_1850",
+            "SMS_Ld1_P512.northamericax4v1pg2_r025_IcoswISC30E3r5.WCYCL1850.allactive-wcprodrrm_1850",
             "SMS_D_Ld1.ne30pg2_r05_IcoswISC30E3r5.CRYO1850",
             )
         },
diff --git a/components/eam/bld/config_files/horiz_grid.xml b/components/eam/bld/config_files/horiz_grid.xml
index 9053a492cda0..9ee6e220a47b 100644
--- a/components/eam/bld/config_files/horiz_grid.xml
+++ b/components/eam/bld/config_files/horiz_grid.xml
@@ -74,6 +74,8 @@
 <horiz_grid dyn="se" hgrid="ne0np4_conus_x4v1_lowcon.pg2"     ncol="39620"  csne="0" csnp="4" npg="2" />
 <horiz_grid dyn="se" hgrid="ne0np4_northamericax4v1"          ncol="130088" csne="0" csnp="4" npg="0" />
 <horiz_grid dyn="se" hgrid="ne0np4_northamericax4v1.pg2"      ncol="57816"  csne="0" csnp="4" npg="2" />
+<horiz_grid dyn="se" hgrid="ne0np4_eastasiax4v1"              ncol="109946" csne="0" csnp="4" npg="0" />
+<horiz_grid dyn="se" hgrid="ne0np4_eastasiax4v1.pg2"          ncol="48864"  csne="0" csnp="4" npg="2" />
 <horiz_grid dyn="se" hgrid="ne0np4_antarcticax4v1"            ncol="109883" csne="0" csnp="4" npg="0" />
 <horiz_grid dyn="se" hgrid="ne0np4_antarcticax4v1.pg2"        ncol="48836"  csne="0" csnp="4" npg="2" />
 <horiz_grid dyn="se" hgrid="ne0np4_arcticx4v1.pg2"            ncol="97200"  csne="0" csnp="4" npg="2" />
diff --git a/components/eam/bld/namelist_files/namelist_defaults_eam.xml b/components/eam/bld/namelist_files/namelist_defaults_eam.xml
index cfd9bf682c8e..5b48403fa3b7 100755
--- a/components/eam/bld/namelist_files/namelist_defaults_eam.xml
+++ b/components/eam/bld/namelist_files/namelist_defaults_eam.xml
@@ -111,9 +111,12 @@
 <ncdata dyn="se" hgrid="ne30np4x8arm"                     nlev="26" ocn="aquaplanet">atm/cam/inic/homme/cami_0003-01-01_arm30x8_L26_ape_c000000.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_arm_x8v3_lowcon"           nlev="30"                 >atm/cam/inic/homme/cami-mam3_0000-01-01_arm_x8v3_lowcon_np4_L30_c000000.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_arm_x8v3_lowcon"           nlev="26" ocn="aquaplanet">atm/cam/inic/homme/cami_0003-01-01_arm_x8v3_lowcon_np4_L26_ape_c000000.nc</ncdata>
+<ncdata dyn="se" hgrid="ne0np4_conus_x4v1_lowcon"         nlev="80"                 >atm/cam/inic/homme/v3.LR_mapped_conusx4v1np4-topoadj.eam.i.2010-01-01.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_conus_x4v1_lowcon"         nlev="72"                 >atm/cam/inic/homme/cami_0002-01-01-00000_conusx4v1np4_L72_c160719.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_conus_x4v1_lowcon"         nlev="30"                 >atm/cam/inic/homme/cami-mam3_0000-01-01_conusx4v1np4_L30_c141106.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_conus_x4v1_lowcon"         nlev="30" ocn="aquaplanet">atm/cam/inic/homme/cami_0003-01-01_conusx4v1np4_L30_ape_c000000.nc</ncdata>
+<ncdata dyn="se" hgrid="ne0np4_northamericax4v1"          nlev="80"                 >atm/cam/inic/homme/v3.LR_mapped_northamericax4v1np4-topoadj.eam.i.2010-01-01.nc</ncdata>
+<ncdata dyn="se" hgrid="ne0np4_eastasiax4v1"              nlev="80"                 >atm/cam/inic/homme/v3.LR_amip_0101_mapped_eastasiax4v1np4-topoadj.eam.i.1990-01-01-00000.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_northamericax4v1"          nlev="72"                 >atm/cam/inic/homme/cami_0001-01-01_northamericax4v1_c190709.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_antarcticax4v1"            nlev="72"                 >atm/cam/inic/homme/cami_mam3_Linoz_0000-01-antarcticax4v1_L72_topoadj_c20200507.nc</ncdata>
 <ncdata dyn="se" hgrid="ne0np4_arcticx4v1"                nlev="72"                 >atm/cam/inic/homme/eam_i_mam4_Linoz_0011-01-arcticx4v1np4_L72_c20220127.nc</ncdata>
@@ -152,7 +155,8 @@
 <bnd_topo hgrid="ne0np4_conus_x4v1_lowcon"        >atm/cam/topo/USGS_conusx4v1-tensor12x_consistentSGH_c150924.nc</bnd_topo>
 <bnd_topo hgrid="ne0np4_conus_x4v1_lowcon" npg="2">atm/cam/topo/USGS_conusx4v1pg2_12x_consistentSGH_20200609.nc</bnd_topo>
 <bnd_topo hgrid="ne0np4_northamericax4v1"  >atm/cam/topo/USGS_northamericax4v1_12xdel2_consistentSGH_191023.nc</bnd_topo>
-<bnd_topo hgrid="ne0np4_northamericax4v1" npg="2">atm/cam/topo/USGS_northamericax4v1pg2_12xdel2_consistentSGH_20020209.nc</bnd_topo>
+<bnd_topo hgrid="ne0np4_northamericax4v1" npg="2">atm/cam/topo/USGS-gtopo30_northamericax4v1np4pg2_oroshp_x6t.c20250813.nc</bnd_topo>
+<bnd_topo hgrid="ne0np4_eastasiax4v1" npg="2">atm/cam/topo/USGS-gtopo30_eastasiax4v1np4pg2_oroshp_x6t.c20250805.nc</bnd_topo>
 <bnd_topo hgrid="ne0np4_antarcticax4v1"  >atm/cam/topo/USGS-gtopo30_antarcticax4v1_12xdel2_consistentSGH_191120.nc</bnd_topo>
 <bnd_topo hgrid="ne0np4_antarcticax4v1"  npg="2">atm/cam/topo/USGS_gtopo30_antarcticax4v1pg2_12xdel2_consistentSGH_20200925.nc</bnd_topo>
 <bnd_topo hgrid="ne0np4_arcticx4v1"      npg="2">atm/cam/topo/USGS-gtopo30_arcticx4v1pg2_12xdel2_20210527.nc</bnd_topo>
@@ -728,6 +732,7 @@
 <drydep_srf_file hgrid="ne0np4_conus_x4v1_lowcon" npg="2" >atm/cam/chem/trop_mam/atmsrf_conusx4v1pg2_20020609.nc</drydep_srf_file>
 <drydep_srf_file hgrid="ne0np4_northamericax4v1">atm/cam/chem/trop_mam/atmsrf_northamericax4v1np4_20191023.nc</drydep_srf_file>
 <drydep_srf_file hgrid="ne0np4_northamericax4v1" npg="2">atm/cam/chem/trop_mam/atmsrf_northamericax4v1pg2_20020209.nc</drydep_srf_file>
+<drydep_srf_file hgrid="ne0np4_eastasiax4v1" npg="2">atm/cam/chem/trop_mam/atmsrf_eastasiax4v1pg2_20250809.nc</drydep_srf_file>
 <drydep_srf_file hgrid="ne0np4_antarcticax4v1">atm/cam/chem/trop_mam/atmsrf_antarcticax4v1np4_20191127.nc</drydep_srf_file>
 <drydep_srf_file hgrid="ne0np4_antarcticax4v1" npg="2">atm/cam/chem/trop_mam/atmsrf_antarcticax4v1pg2_20020925.nc</drydep_srf_file>
 <drydep_srf_file hgrid="ne0np4_arcticx4v1"     npg="2">atm/cam/chem/trop_mam/atmsrf_arcticx4v1pg2_20210512.nc</drydep_srf_file>
@@ -1424,6 +1429,7 @@
 <se_ne hgrid="ne0np4_arm_x8v3_lowcon"  > 0 </se_ne>
 <se_ne hgrid="ne0np4_conus_x4v1_lowcon"  > 0 </se_ne>
 <se_ne hgrid="ne0np4_northamericax4v1"  > 0 </se_ne>
+<se_ne hgrid="ne0np4_eastasiax4v1"  > 0 </se_ne>
 <se_ne hgrid="ne0np4_svalbard_x8v1_lowcon"  > 0 </se_ne>
 <se_ne hgrid="ne0np4_sooberingoa_x4x8v1_lowcon"  > 0 </se_ne>
 <se_ne hgrid="ne0np4_enax4v1">0</se_ne>
@@ -1433,6 +1439,7 @@
 <mesh_file hgrid="ne0np4_arm_x8v3_lowcon"  >atm/cam/inic/homme/arm_x8v3_lowcon.g</mesh_file>
 <mesh_file hgrid="ne0np4_conus_x4v1_lowcon"  >atm/cam/inic/homme/conusx4v1.g</mesh_file>
 <mesh_file hgrid="ne0np4_northamericax4v1"  >atm/cam/inic/homme/northamericax4v1.g</mesh_file>
+<mesh_file hgrid="ne0np4_eastasiax4v1"  >atm/cam/inic/homme/eastasiax4v1.g</mesh_file>
 <mesh_file hgrid="ne0np4_antarcticax4v1"  >atm/cam/inic/homme/antarcticax4v1.g</mesh_file>
 <mesh_file hgrid="ne0np4_arcticx4v1"      >atm/cam/inic/homme/arcticx4v1.g</mesh_file>
 <mesh_file hgrid="ne0np4_svalbard_x8v1_lowcon"  >atm/cam/inic/homme/svalbardx8v1.g</mesh_file>
@@ -1450,6 +1457,7 @@
 <nu_top dyn_target="theta-l" hgrid="ne512np4"> 2e4 </nu_top>
 <nu_top dyn_target="theta-l" hgrid="ne1024np4"> 1e4 </nu_top>
 <nu_top dyn_target="theta-l" hgrid="ne0np4_northamericax4v1"> 1e5 </nu_top>
+<nu_top dyn_target="theta-l" hgrid="ne0np4_eastasiax4v1"> 1e5 </nu_top>
 <nu_top dyn_target="theta-l" hgrid="ne0np4_antarcticax4v1"> 1e5 </nu_top>
 <nu_top dyn_target="theta-l" hgrid="ne0np4_arcticx4v1"    > 1e5 </nu_top>
 <nu_top dyn_target="theta-l" hgrid="ne0np4_conus_x4v1_lowcon"> 1e5 </nu_top>
@@ -1487,6 +1495,7 @@
 <se_tstep dyn_target="theta-l" hgrid="ne60np4" >  150 </se_tstep>
 <se_tstep dyn_target="theta-l" hgrid="ne120np4">  75 </se_tstep>
 <se_tstep dyn_target="theta-l" hgrid="ne0np4_northamericax4v1"> 75 </se_tstep>
+<se_tstep dyn_target="theta-l" hgrid="ne0np4_eastasiax4v1"> 75 </se_tstep>
 <se_tstep dyn_target="theta-l" hgrid="ne0np4_antarcticax4v1"> 75 </se_tstep>
 <se_tstep dyn_target="theta-l" hgrid="ne0np4_arcticx4v1"    > 75 </se_tstep>
 <se_tstep dyn_target="theta-l" hgrid="ne0np4_conus_x4v1_lowcon"> 75 </se_tstep>
@@ -1514,6 +1523,7 @@
 <hypervis_subcycle_q dyn_target="theta-l" hgrid="ne1024np4"> 6  </hypervis_subcycle_q>
 
 <hypervis_subcycle_tom dyn_target="theta-l" hgrid="ne0np4_northamericax4v1"> 3 </hypervis_subcycle_tom>
+<hypervis_subcycle_tom dyn_target="theta-l" hgrid="ne0np4_eastasiax4v1"> 3 </hypervis_subcycle_tom>
 <hypervis_subcycle_tom dyn_target="theta-l" hgrid="ne0np4_antarcticax4v1"  > 3 </hypervis_subcycle_tom>
 <hypervis_subcycle_tom dyn_target="theta-l" hgrid="ne0np4_arcticx4v1"      > 3 </hypervis_subcycle_tom>
 <hypervis_subcycle_tom dyn_target="theta-l" hgrid="ne0np4_conus_x4v1"      > 3 </hypervis_subcycle_tom>
@@ -1522,6 +1532,7 @@
 
 <hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_conus_x4v1_lowcon"> 2 </hypervis_subcycle>
 <hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_northamericax4v1" > 2 </hypervis_subcycle>
+<hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_eastasiax4v1" > 2 </hypervis_subcycle>
 <hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_antarcticax4v1"   > 2 </hypervis_subcycle>
 <hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_arcticx4v1"       > 2 </hypervis_subcycle>
 <hypervis_subcycle dyn_target="theta-l" hgrid="ne0np4_twpx4v1"   > 2 </hypervis_subcycle>
@@ -1566,6 +1577,7 @@ with se_tstep, dt_remap_factor, dt_tracer_factor set to -1
 <nu dyn_target="preqx" hgrid="ne0np4_arm_x8v3_lowcon"  > 8.0e-8</nu>
 <nu dyn_target="preqx" hgrid="ne0np4_conus_x4v1_lowcon"  > 8.0e-8</nu>
 <nu dyn_target="preqx" hgrid="ne0np4_northamericax4v1"  > 8.0e-8</nu>
+<nu dyn_target="preqx" hgrid="ne0np4_eastasiax4v1"  > 8.0e-8</nu>
 <nu dyn_target="preqx" hgrid="ne0np4_antarcticax4v1"  > 8.0e-8</nu>
 <nu dyn_target="preqx" hgrid="ne0np4_arcticx4v1"      > 8.0e-8</nu>
 <nu dyn_target="preqx" hgrid="ne0np4_svalbard_x8v1_lowcon"  > 8.0e-8</nu>
@@ -1587,6 +1599,7 @@ with se_tstep, dt_remap_factor, dt_tracer_factor set to -1
 <nu_div dyn_target="preqx" hgrid="ne0np4_arm_x8v3_lowcon"  > 20.0e-8</nu_div>
 <nu_div dyn_target="preqx" hgrid="ne0np4_conus_x4v1_lowcon"  > 20.0e-8</nu_div>
 <nu_div dyn_target="preqx" hgrid="ne0np4_northamericax4v1"  > 20.0e-8</nu_div>
+<nu_div dyn_target="preqx" hgrid="ne0np4_eastasiax4v1"  > 20.0e-8</nu_div>
 <nu_div dyn_target="preqx" hgrid="ne0np4_antarcticax4v1"  > 20.0e-8</nu_div>
 <nu_div dyn_target="preqx" hgrid="ne0np4_arcticx4v1"      > 20.0e-8</nu_div>
 <nu_div dyn_target="preqx" hgrid="ne0np4_svalbard_x8v1_lowcon"  > 20.0e-8</nu_div>
@@ -1598,6 +1611,7 @@ with se_tstep, dt_remap_factor, dt_tracer_factor set to -1
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_arm_x8v3_lowcon"  > 3.2 </hypervis_scaling>
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_conus_x4v1_lowcon"  > 3.2 </hypervis_scaling>
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_northamericax4v1"  > 3.2 </hypervis_scaling>
+<hypervis_scaling dyn_target="preqx" hgrid="ne0np4_eastasiax4v1"  > 3.2 </hypervis_scaling>
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_antarcticax4v1"  > 3.2 </hypervis_scaling>
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_arcticx4v1"      > 3.2 </hypervis_scaling>
 <hypervis_scaling dyn_target="preqx" hgrid="ne0np4_svalbard_x8v1_lowcon"  > 3.2 </hypervis_scaling>
@@ -1641,6 +1655,7 @@ with se_tstep, dt_remap_factor, dt_tracer_factor set to -1
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_arm_x8v3_lowcon"  > 5 </se_nsplit>
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_conus_x4v1_lowcon"  > 4 </se_nsplit>
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_northamericax4v1"  > 4 </se_nsplit>
+<se_nsplit dyn_target="preqx" hgrid="ne0np4_eastasiax4v1"  > 4 </se_nsplit>
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_antarcticax4v1"  > 4 </se_nsplit>
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_arcticx4v1"      > 4 </se_nsplit>
 <se_nsplit dyn_target="preqx" hgrid="ne0np4_svalbard_x8v1_lowcon"  > 5 </se_nsplit>
@@ -1662,6 +1677,7 @@ with se_tstep, dt_remap_factor, dt_tracer_factor set to -1
 <hypervis_subcycle hgrid="ne0np4_arm_x8v3_lowcon" dyn_target="preqx" > 8 </hypervis_subcycle>
 <hypervis_subcycle hgrid="ne0np4_conus_x4v1_lowcon" dyn_target="preqx" > 7 </hypervis_subcycle>
 <hypervis_subcycle hgrid="ne0np4_northamericax4v1" dyn_target="preqx"  > 7 </hypervis_subcycle>
+<hypervis_subcycle hgrid="ne0np4_eastasiax4v1" dyn_target="preqx"  > 7 </hypervis_subcycle>
 <hypervis_subcycle hgrid="ne0np4_antarcticax4v1" dyn_target="preqx"  > 7 </hypervis_subcycle>
 <hypervis_subcycle hgrid="ne0np4_arcticx4v1"     dyn_target="preqx"  > 7 </hypervis_subcycle>
 <hypervis_subcycle hgrid="ne0np4_svalbard_x8v1_lowcon" dyn_target="preqx" > 8 </hypervis_subcycle>
diff --git a/components/eam/cime_config/config_component.xml b/components/eam/cime_config/config_component.xml
index 785a6469650d..1628d90b9d6b 100755
--- a/components/eam/cime_config/config_component.xml
+++ b/components/eam/cime_config/config_component.xml
@@ -55,9 +55,6 @@
       <value compset="_ELM%[^_]*BC"            >-bc_dep_to_snow_updates</value>
       <value compset="_EAM.*_BGC%*"            >-co2_cycle</value>
 
-      <!-- Temporarily override the default v3 vertical grid (L80) and use L72 to maintain RRM test coverage -->
-      <value grid="a%ne0">-nlev 72</value>
-
       <!-- Single column model (SCM) -->
       <value compset="_EAM%SCM_"       >&eamv3_phys_defaults; &eamv3_chem_defaults; -scam</value>
 
diff --git a/driver-mct/cime_config/config_component_e3sm.xml b/driver-mct/cime_config/config_component_e3sm.xml
index 8fc93b607d46..8864ba81070b 100755
--- a/driver-mct/cime_config/config_component_e3sm.xml
+++ b/driver-mct/cime_config/config_component_e3sm.xml
@@ -415,6 +415,7 @@
       <value compset=".+" grid="a%ne0np4_arm_x8v3" >144</value>
       <value compset=".+" grid="a%ne0np4_conus_x4v1" >96</value>
       <value compset=".+" grid="a%ne0np4_northamericax4v1" >48</value>
+      <value compset=".+" grid="a%ne0np4_eastasiax4v1" >48</value>
       <value compset=".+" grid="a%ne0np4_antarcticax4v1" >48</value>
       <value compset=".+" grid="a%ne0np4_svalbard_x8v1" >144</value>
       <value compset=".+" grid="a%ne0np4_sooberingoa_x4x8v1" >144</value>
diff --git a/driver-mct/cime_config/namelist_definition_drv.xml b/driver-mct/cime_config/namelist_definition_drv.xml
index 982acabe64d8..64d05c252ec1 100644
--- a/driver-mct/cime_config/namelist_definition_drv.xml
+++ b/driver-mct/cime_config/namelist_definition_drv.xml
@@ -1524,6 +1524,7 @@
     <values>
       <value>$EPS_AGRID</value>
       <value atm_grid="ne0np4_northamericax4v1">3.e-10</value>
+      <value atm_grid="ne0np4_eastasiax4v1">3.e-10</value>
       <value atm_grid="ne1024np4.pg2" lnd_grid="ne1024np4.pg2">1.e-10</value>
       <value atm_grid="ne120np4.pg2" lnd_grid="ne120np4.pg2">1.e-10</value>
       <value atm_grid="ne256np4.pg2" lnd_grid="ne256np4.pg2">1.e-10</value>