diff --git a/tests/parm/input_global_parent.nml.IN b/tests/parm/input_global_parent.nml.IN
index a2b6cf9de8..b95aa290b4 100644
--- a/tests/parm/input_global_parent.nml.IN
+++ b/tests/parm/input_global_parent.nml.IN
@@ -209,7 +209,7 @@
   betal_deep   = @[BETAL_DEEP]
   betas_deep   = @[BETAS_DEEP]
   ras          = @[RAS]
-  cdmbgwd      = @[CDMBWD]
+  cdmbgwd      = @[CDMBWD_NEST02]
   clam_deep    = @[CLAM_DEEP]
   prslrd0      = 0.
   ivegsrc      = 1
@@ -293,7 +293,7 @@
   knob_ugwp_lzmin    = 0.75e3
   knob_ugwp_lzstar   = 2.0e3
   knob_ugwp_taumin   = 0.25e-3
-  knob_ugwp_tauamp   = @[KNOB_UGWP_TAUAMP]
+  knob_ugwp_tauamp   = @[KNOB_UGWP_TAUAMP_NEST02]
   knob_ugwp_lhmet    = 200.0e3
   knob_ugwp_orosolv  = 'pss-1986'
 /
diff --git a/tests/tests/gnv1_nested b/tests/tests/gnv1_nested
index 1e9fd4794d..696118d988 100644
--- a/tests/tests/gnv1_nested
+++ b/tests/tests/gnv1_nested
@@ -65,7 +65,7 @@ export SDAY=24
 export SHOUR=00
 export FHMAX=18
 export FHROT=0
-export DT_ATMOS=450
+export DT_ATMOS=300
 export RESTART_INTERVAL='12 -1'
 export WRITE_GROUP=2
 export WRTTASK_PER_GROUP=12
@@ -121,7 +121,7 @@ export TWOWAYNEST02=.true.
 export H2O_PHYS=.true.
 export IMP_PHYSICS=8
 export IOVR=3
-export DT_INNER=450
+export DT_INNER=$DT_ATMOS
 export DO_MYNNEDMF=.true.
 export DO_MYNNSFCLAY=.true.
 export BL_MYNN_TKEADVECT=.true.
@@ -213,7 +213,8 @@ export BETAL_DEEP_NEST02=0.05
 export BETAMCU_NEST02=1.5
 export BETAS_DEEP_NEST02=0.05
 export BETASCU_NEST02=8.0
-export CDMBWD=10.0,3.5,1.0,1.0
+export CDMBWD=20.0,2.5,1.0,1.0
+export CDMBWD_NEST02=5.0,5.0,1.0,1.0
 export CLAM_DEEP=0.15
 export CPL_IMP_MRG=.true.
 export DO_CA=.false.
@@ -228,7 +229,8 @@ export DO_DEEP=.true.
 export DO_DEEP_NEST02=.true.
 export FRAC_GRID=.false.
 export ELMX=300.
-export KNOB_UGWP_TAUAMP=1.5e-3
+export KNOB_UGWP_TAUAMP=3.0e-3
+export KNOB_UGWP_TAUAMP_NEST02=0.8e-3
 export KNOB_UGWP_DOKDIS=2
 export KNOB_UGWP_NDX4LH=4
 export KNOB_UGWP_VERSION=1