diff --git a/parm/config/gefs/config.fcst b/parm/config/gefs/config.fcst
index 103d6f091d..bf24c4e906 100644
--- a/parm/config/gefs/config.fcst
+++ b/parm/config/gefs/config.fcst
@@ -108,8 +108,9 @@ if (( gwd_opt == 2 )); then
     export do_ugwp_v0_orog_only=".false."
     export do_ugwp_v0_nst_only=".false."
     export do_gsl_drag_ls_bl=".true."
-    export do_gsl_drag_ss=".true."
+    export do_gsl_drag_ss=".false."
     export do_gsl_drag_tofd=".true."
+    export do_gwd_opt_psl=".true."    
     export do_ugwp_v1_orog_only=".false."
     launch_level=$(echo "${LEVS}/2.35" |bc)
     export launch_level
diff --git a/parm/config/gfs/config.fcst b/parm/config/gfs/config.fcst
index 36064d5f2b..3323107ba7 100644
--- a/parm/config/gfs/config.fcst
+++ b/parm/config/gfs/config.fcst
@@ -120,8 +120,9 @@ if (( gwd_opt == 2 )); then
     export do_ugwp_v0_orog_only=".false."
     export do_ugwp_v0_nst_only=".false."
     export do_gsl_drag_ls_bl=".true."
-    export do_gsl_drag_ss=".true."
+    export do_gsl_drag_ss=".false."
     export do_gsl_drag_tofd=".true."
+    export do_gwd_opt_psl=".true."    
     export do_ugwp_v1_orog_only=".false."
     launch_level=$(echo "${LEVS}/2.35" |bc)
     export launch_level
diff --git a/ush/parsing_namelists_FV3.sh b/ush/parsing_namelists_FV3.sh
index b88849d7e7..08746423c8 100755
--- a/ush/parsing_namelists_FV3.sh
+++ b/ush/parsing_namelists_FV3.sh
@@ -284,6 +284,7 @@ EOF
   do_gsl_drag_ls_bl    = ${do_gsl_drag_ls_bl:-".true."}
   do_gsl_drag_ss       = ${do_gsl_drag_ss:-".true."}
   do_gsl_drag_tofd     = ${do_gsl_drag_tofd:-".true."}
+  do_gwd_opt_psl       = ${do_gwd_opt_psl:-".false."}
   do_ugwp_v1_orog_only = ${do_ugwp_v1_orog_only:-".false."}
   min_lakeice  = ${min_lakeice:-"0.15"}
   min_seaice   = ${min_seaice:-"0.15"}
@@ -369,6 +370,7 @@ cat >> input.nml <<EOF
   betadcu      = ${betadcu:-"2.0"}
   ras          = ${ras:-".false."}
   cdmbgwd      = ${cdmbgwd:-"3.5,0.25"}
+  psl_gwd_dx_factor  = ${psl_gwd_dx_factor:-"6.0"}
   prslrd0      = ${prslrd0:-"0."}
   ivegsrc      = ${ivegsrc:-"1"}
   isot         = ${isot:-"1"}
diff --git a/ush/parsing_namelists_FV3_nest.sh b/ush/parsing_namelists_FV3_nest.sh
index 2f99a1cdf5..25faa37ddb 100755
--- a/ush/parsing_namelists_FV3_nest.sh
+++ b/ush/parsing_namelists_FV3_nest.sh
@@ -342,6 +342,7 @@ EOF
   do_gsl_drag_ls_bl    = ${do_gsl_drag_ls_bl:-".true."}
   do_gsl_drag_ss       = ${do_gsl_drag_ss:-".true."}
   do_gsl_drag_tofd     = ${do_gsl_drag_tofd:-".true."}
+  do_gwd_opt_psl       = ${do_gwd_opt_psl:-".false."}
   do_ugwp_v1_orog_only = ${do_ugwp_v1_orog_only:-".false."}
   min_lakeice  = ${min_lakeice:-"0.15"}
   min_seaice   = ${min_seaice:-"0.15"}
@@ -426,6 +427,7 @@ cat >> "${nml_file}" <<EOF
   betadcu      = ${betadcu:-"2.0"}
   ras          = ${ras:-".false."}
   cdmbgwd      = ${cdmbgwd:-"3.5,0.25"}
+  psl_gwd_dx_factor  = ${psl_gwd_dx_factor:-"6.0"}
   prslrd0      = ${prslrd0:-"0."}
   ivegsrc      = ${ivegsrc:-"1"}
   isot         = ${isot:-"1"}