diff --git a/cime_config/testdefs/ExpectedTestFails.xml b/cime_config/testdefs/ExpectedTestFails.xml
index a9461c1..b06ab76 100644
--- a/cime_config/testdefs/ExpectedTestFails.xml
+++ b/cime_config/testdefs/ExpectedTestFails.xml
@@ -27,7 +27,7 @@
        sort of comment you desire.
   -->
 
-  <test name="SMS_D_Ld5.f10_f10_mg37.I1850Clm60Sp.derecho_nvhpc.mosart-default">
+  <test name="SMS_D_Ld5.f10_f10_mt201.I1850Clm60Sp.derecho_nvhpc.mosart-default">
     <phase name="SHAREDLIB_BUILD">
       <status>FAIL</status>
       <issue>MOSART#109</issue>
diff --git a/cime_config/testdefs/testlist_mosart.xml b/cime_config/testdefs/testlist_mosart.xml
index ce171cf..d003c1a 100644
--- a/cime_config/testdefs/testlist_mosart.xml
+++ b/cime_config/testdefs/testlist_mosart.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <testlist version="2.0">
 
-  <test name="PFS" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/default">
+  <test name="PFS" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/default">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="derecho" compiler="gnu" category="mosart"></machine>
@@ -14,7 +14,7 @@
       <option name="comment"  >Performance test</option>
     </options>
   </test>
-  <test name="ERS_Ld5" grid="f10_f10_mg37" compset="I1850Clm60BgcCropG" testmods="mosart/default">
+  <test name="ERS_Ld5" grid="f10_f10_mt201" compset="I1850Clm60BgcCropG" testmods="mosart/default">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
     </machines>
@@ -23,7 +23,7 @@
       <option name="comment"  >Restart test without DEBUG with CISM</option>
     </options>
   </test>
-  <test name="ERS_Ld5" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/iceOff">
+  <test name="ERS_Ld5" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/iceOff">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -33,7 +33,7 @@
       <option name="comment"  >Restart test without DEBUG with ice flow off</option>
     </options>
   </test>
-  <test name="SMS_Ld5" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/mosartCold">
+  <test name="SMS_Ld5" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/mosartCold">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -43,7 +43,7 @@
       <option name="comment"  >Run a Cold-Start with main machine and all compilers</option>
     </options>
   </test>
-  <test name="SMS_Lh3" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/mosartOff">
+  <test name="SMS_Lh3" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/mosartOff">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="izumi" compiler="gnu" category="mosart"></machine>
@@ -54,7 +54,7 @@
       <option name="comment"  >Test with MOSART turned off</option>
     </options>
   </test>
-  <test name="SMS_Lh3" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/clmAccelSpinupIgnoreWarn">
+  <test name="SMS_Lh3" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/clmAccelSpinupIgnoreWarn">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -64,7 +64,7 @@
       <option name="comment"  >Test with CLM accelerated spinup, but ignore warnings so it will send a warning but still run</option>
     </options>
   </test>
-  <test name="SMS_D_Ld5" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/default">
+  <test name="SMS_D_Ld5" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/default">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="derecho" compiler="gnu" category="mosart"></machine>
@@ -79,7 +79,7 @@
       <option name="comment"  >Smoke test with DEBUG on all machines/compilers</option>
     </options>
   </test>
-  <test name="SMS_D" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/decompOpts">
+  <test name="SMS_D" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/decompOpts">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -89,7 +89,7 @@
       <option name="comment"  >decompOpts are not bit for bit on PE layout change</option>
     </options>
   </test>
-  <test name="SMS_D" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/passChannelDepths">
+  <test name="SMS_D" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/passChannelDepths">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -100,7 +100,7 @@
       <option name="comment"  >Pass channel depths needed for hillslope model</option>
     </options>
   </test>
-  <test name="ERP_D" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/qgrwlOpts">
+  <test name="ERP_D" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/qgrwlOpts">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -111,7 +111,7 @@
       <option name="comment"  >Exact restart test changing processor count with DEBUG on</option>
     </options>
   </test>
-  <test name="PEM_D" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/inplacethreshold">
+  <test name="PEM_D" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/inplacethreshold">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
@@ -122,7 +122,7 @@
       <option name="comment"  >Change the processor count and set direct_in_place for threshold negative flow</option>
     </options>
   </test>
-  <test name="SMS" grid="f10_f10_mg37" compset="I1850Clm60Sp" testmods="mosart/nobypass">
+  <test name="SMS" grid="f10_f10_mt201" compset="I1850Clm60Sp" testmods="mosart/nobypass">
     <machines>
       <machine name="derecho" compiler="intel" category="mosart"></machine>
       <machine name="betzy" compiler="intel" category="mosart_noresm"></machine>
diff --git a/cime_config/testdefs/testmods_dirs/mosart/clmAccelSpinupIgnoreWarn/shell_commands b/cime_config/testdefs/testmods_dirs/mosart/clmAccelSpinupIgnoreWarn/shell_commands
index da7655c..7167ee2 100755
--- a/cime_config/testdefs/testmods_dirs/mosart/clmAccelSpinupIgnoreWarn/shell_commands
+++ b/cime_config/testdefs/testmods_dirs/mosart/clmAccelSpinupIgnoreWarn/shell_commands
@@ -1,2 +1,4 @@
 ./xmlchange CLM_ACCELERATED_SPINUP=on
 ./xmlchange MOSART_IGNORE_WARNINGS=TRUE
+#Set DGLC coupling from once to eight times per day so 3-hour tests can work
+./xmlchange GLC_NCPL=8
diff --git a/cime_config/testdefs/testmods_dirs/mosart/mosartOff/shell_commands b/cime_config/testdefs/testmods_dirs/mosart/mosartOff/shell_commands
index 127708c..8893828 100755
--- a/cime_config/testdefs/testmods_dirs/mosart/mosartOff/shell_commands
+++ b/cime_config/testdefs/testmods_dirs/mosart/mosartOff/shell_commands
@@ -1 +1,3 @@
 ./xmlchange MOSART_MODE=null
+#Set DGLC coupling from once to eight times per day so 3-hour tests can work
+./xmlchange GLC_NCPL=8
diff --git a/docs/ChangeLog.md b/docs/ChangeLog.md
index f7219d3..9198914 100644
--- a/docs/ChangeLog.md
+++ b/docs/ChangeLog.md
@@ -1,3 +1,19 @@
+<hr>
+# Tag name:  mosart1.1.14
+### Originator(s): slevis
+### Date: Oct 09, 2026
+### One-line Summary: Replace g37 grid with t201 in mosart test-suite
+
+Relates to ESCOMP/CTSM#4234
+Corresponds to ESCOMP/RTM#69
+
+Testing: standard testing
+  izumi ---- OK (NLCOMP diffs expected)
+  derecho -- OK (NLCOMP diffs expected)
+
+More details in the PRs:
+https://github.com/ESCOMP/MOSART/pull/131
+
 <hr>
 # Tag name:  mosart1.1.13
 ### Originator(s): billsacks / ekluzek
@@ -13,7 +29,6 @@ Testing: standard testing
 More details in the PRs:
 https://github.com/ESCOMP/MOSART/pull/126
 
-<hr>
 <hr>
 # Tag name:  mosart1.1.12
 ### Originator(s): slevis