diff --git a/.gitmodules b/.gitmodules
index a14a9f2090..a843f4a9a1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -188,7 +188,8 @@ fxDONOTUSEurl = https://github.com/ESCOMP/CESM_CICE
[submodule "clm"]
path = components/clm
url = https://github.com/ESCOMP/CTSM
-fxtag = alpha-ctsm5.4.CMIP7.09.ctsm5.3.068
+fxtag = ctsm5.4.003
+#fxtag = alpha-ctsm5.4.CMIP7.09.ctsm5.3.068
fxrequired = ToplevelRequired
fxDONOTUSEurl = https://github.com/ESCOMP/CTSM
diff --git a/bld/namelist_files/namelist_defaults_cam.xml b/bld/namelist_files/namelist_defaults_cam.xml
index 75acdede44..1e65e9ea36 100644
--- a/bld/namelist_files/namelist_defaults_cam.xml
+++ b/bld/namelist_files/namelist_defaults_cam.xml
@@ -25,6 +25,8 @@
225
450
225
+450
+225
1800
@@ -220,6 +222,8 @@
atm/cam/inic/se/ape_cam5_ne120np4_L30_c170419.nc
atm/cam/inic/se/F2000climo_ne120pg3_mt13_01-01-00000_c200420.nc
atm/cam/inic/se/ape_cam6_ne120np4_L32_c170908.nc
+/glade/work/aherring/grids/uniform-res/ne120np4.pg3/inic/betacast_ERA5ml_20100101_ne120np4_L58_c260225.nc
+/glade/work/aherring/grids/uniform-res/ne120np4.pg3/inic/betacast_ERA5ml_20100101_ne120np4_L93_c260225.nc
atm/waccm/ic/fx2000_ne120pg3L273.001.cam.i.0002-01-01-00000.noBRCL_c250522.nc
atm/cam/inic/homme/cami_1850-01-01_ne240np4_L26_c110314.nc
@@ -234,8 +238,18 @@
atm/waccm/ic/FW2000_CONUS_30x8_L70_01-01-0001_c200602.nc
atm/cam/inic/se/FHIST_ARCTIC_ne30x4_mt12_1979bc-mg3_01-01-00000_c200424.nc
-
atm/cam/inic/se/FHIST_ARCTICGRIS_ne30x8_mt12_1979bc-mg3_01-01-00000_c200428.nc
+/glade/work/aherring/grids/var-res/ne0np4.NATL.ne30x8/inic/betacast_ERA5ml_20200101_NATL_L32_c250620.nc
+/glade/work/aherring/grids/var-res/ne0np4.CONUS.ne30x8/inic/betacast_ERA5ml_20200101_CONUS_c250617.nc
+/glade/work/aherring/grids/var-res/ne0np4.ARCTIC.ne30x4/inic/betacast_ERA5ml_20200101_ARCTIC_c250617.nc
+/glade/work/aherring/grids/var-res/ne0np4.ARCTICGRIS.ne30x8/inic/betacast_ERA5ml_20200101_ARCTICGRIS_c250617.nc
+/glade/work/aherring/grids/var-res/ne0np4.POLARRES.ne30x4/inic/betacast_ERA5ml_20200101_POLARCAP_c250322.nc
+/glade/work/aherring/grids/var-res/ne0np4.NATL.ne30x8/inic/betacast_ERA5ml_20200101_NATL_L58_c250618.nc
+/glade/work/aherring/grids/var-res/ne0np4.CONUS.ne30x8/inic/betacast_ERA5ml_20100101_CONUS_ne30x8_L93_c260225.nc
+/glade/work/aherring/grids/var-res/ne0np4.ARCTIC.ne30x4/inic/betacast_ERA5ml_20100101_ARCTIC_ne30x4_L93_c260225.nc
+/glade/work/aherring/grids/var-res/ne0np4.ARCTICGRIS.ne30x8/inic/betacast_ERA5ml_20100101_ARCTICGRIS_ne30x8_L93_c260225.nc
+/glade/work/aherring/grids/var-res/ne0np4.POLARRES.ne30x4/inic/betacast_ERA5ml_20100101_POLARCAP_ne30x4_L93_c260225.nc
+/glade/work/aherring/grids/var-res/ne0np4.NATL.ne30x8/inic/betacast_ERA5ml_20100101_NATL_ne30x8_L93_c260225.nc
atm/cam/inic/mpas/cami_01-01-2000_00Z_mpasa480_L32_CFSR_c240508.nc
@@ -327,6 +341,8 @@
atm/cam/topo/se/ne30x8_CONUS_nc3000_Co060_Fi001_MulG_PF_RR_Nsw042_c200428.nc
atm/cam/topo/se/ne30x4_ARCTIC_nc3000_Co060_Fi001_MulG_PF_RR_Nsw042_c200428.nc
atm/cam/topo/se/ne30x8_ARCTICGRIS_nc3000_Co060_Fi001_MulG_PF_RR_Nsw042_c200428.nc
+/glade/work/aherring/grids/var-res/ne0np4.POLARRES.ne30x4/topo/POLARCAP_gmted2010_modis_bedmachine_nc3000_Laplace0100_noleak_20250322.nc
+/glade/work/aherring/grids/var-res/ne0np4.NATL.ne30x8/topo/NATL.ne30x8_gmted2010_modis_bedmachine_nc3000_Laplace0100_noleak_20260225.nc
atm/cam/topo/mpas/mpasa480_gmted2010_modis_bedmachine_nc3000_Laplace0400_noleak_20240507.nc
atm/cam/topo/mpas/mpasa120_gmted2010_modis_bedmachine_nc3000_Laplace0100_noleak_20240507.nc
@@ -361,6 +377,8 @@
atm/cam/coords/ne0np4EQFACE.ne5x4.g
atm/cam/coords/ne30x4_EXODUS_ARCTIC_c191009.g
atm/cam/coords/ne30x8_EXODUS_ARCTICGRIS_c191209.g
+/glade/work/aherring/grids/var-res/ne0np4.POLARRES.ne30x4/grids/POLARRES_ne30x4_EXODUS.nc
+/glade/work/rwills/grids/var-res/ne0np4.NATL.ne30x8/grids/NATL_ne30x8_EXODUS.nc
none
@@ -2043,6 +2061,8 @@
atm/cam/chem/trop_mam/atmsrf_ne0np4conus30x8_161116.nc
atm/cam/chem/trop_mam/atmsrf_ne30x4_ARCTIC_191011.nc
atm/cam/chem/trop_mam/atmsrf_ne30x8_ARCTICGRIS_191212.nc
+/glade/work/aherring/grids/var-res/ne0np4.POLARRES.ne30x4/atmsrf/atmsrf_POLARCAP_250322.nc
+/glade/work/rwills/grids/var-res/ne0np4.NATL.ne30x8/atmsrf/atmsrf_ne0np4.NATL.ne30x8_201109.nc
atm/cam/chem/trop_mam/atmsrf_C24_c200625.nc
atm/cam/chem/trop_mam/atmsrf_C48_c200625.nc
@@ -2433,7 +2453,7 @@
1
1
3
-
+
2
1
2
@@ -3224,21 +3244,29 @@
18
18
30
+ 2
+
+ 1
+ 3
+ 3
+ 2
+ 4
+ 20
+ 60
+ 4
+ 2
+ 4
+ 2
+ 4
+ 40
+ 180
+ 10
+ 3
+ 3
+ 6
+ 6
+ 6
- 1
- 3
- 3
- 2
- 4
- 20
- 60
- 4
- 2
- 4
- 2
- 4
- 40
- 180
1
2
@@ -3293,33 +3321,46 @@
.true.
.true.
.true.
+ .true.
+ .true.
2
1
- 3
- 3
- 2
- 3
- 3
+ 3
+ 3
+ 2
+ 3
+ 3
4
- 2
- 4
- 4
- 5
- 10
-
- 7
- 10
-
- 3
- 3
- 2
- 2
- 4
- 2
- 3
- 5
+ 2
+ 4
+ 4
+ 5
+ 10
+ 7
+ 10
+ 8
+ 3
+ 3
+ 4
+ 4
+ 4
+
+ 3
+ 3
+ 2
+ 2
+ 4
+ 2
+ 3
+ 5
+ 3
+ 6
+ 6
+ 5
+ 5
+ 5
-1
-1
diff --git a/components/clm b/components/clm
index 0991175998..98067b4314 160000
--- a/components/clm
+++ b/components/clm
@@ -1 +1 @@
-Subproject commit 0991175998c94291f3d544169e3a4acb71b0b7f1
+Subproject commit 98067b43147f62bc0fee7dedabc67763a061e166