diff --git a/Externals.cfg b/Externals.cfg
index d46bebfd78..fee84e957a 100644
--- a/Externals.cfg
+++ b/Externals.cfg
@@ -57,7 +57,7 @@ protocol = git
 required = False
 
 [GDASApp]
-hash = 2774a10
+hash = f614cc2
 local_path = sorc/gdas.cd
 repo_url = https://github.com/NOAA-EMC/GDASApp.git
 protocol = git
diff --git a/parm/config/gfs/config.resources b/parm/config/gfs/config.resources
index 6844802a0b..40b87a4a53 100644
--- a/parm/config/gfs/config.resources
+++ b/parm/config/gfs/config.resources
@@ -249,7 +249,7 @@ elif [[ "${step}" = "aeroanlinit" ]]; then
 
    # below lines are for creating JEDI YAML
    case ${CASE} in
-     C768)
+      C768)
         layout_x=8
         layout_y=8
         ;;
@@ -257,10 +257,15 @@ elif [[ "${step}" = "aeroanlinit" ]]; then
         layout_x=8
         layout_y=8
         ;;
-     C192 | C96 | C48)
+      C192 | C96)
         layout_x=8
         layout_y=8
         ;;
+      C48 )
+        # this case is for testing only
+        layout_x=1
+        layout_y=1
+        ;;
       *)
           echo "FATAL ERROR: Resolution not supported for aerosol analysis'"
           exit 1
@@ -279,7 +284,7 @@ elif [[ "${step}" = "aeroanlinit" ]]; then
 elif [[ "${step}" = "aeroanlrun" ]]; then
 
    case ${CASE} in
-     C768)
+      C768)
         layout_x=8
         layout_y=8
         ;;
@@ -287,10 +292,15 @@ elif [[ "${step}" = "aeroanlrun" ]]; then
         layout_x=8
         layout_y=8
         ;;
-     C192 | C96 | C48)
+      C192 | C96)
         layout_x=8
         layout_y=8
         ;;
+      C48 )
+        # this case is for testing only
+        layout_x=1
+        layout_y=1
+        ;;
       *)
           echo "FATAL ERROR: Resolution ${CASE} is not supported, ABORT!"
           exit 1
diff --git a/sorc/checkout.sh b/sorc/checkout.sh
index 57bdae649f..98873ea6f1 100755
--- a/sorc/checkout.sh
+++ b/sorc/checkout.sh
@@ -160,7 +160,7 @@ if [[ ${checkout_gsi} == "YES" ]]; then
 fi
 
 if [[ ${checkout_gdas} == "YES" ]]; then
-  checkout "gdas.cd" "https://github.com/NOAA-EMC/GDASApp.git" "2774a10"; errs=$((errs + $?))
+  checkout "gdas.cd" "https://github.com/NOAA-EMC/GDASApp.git" "f614cc2"; errs=$((errs + $?))
 fi
 
 if [[ ${checkout_gsi} == "YES" || ${checkout_gdas} == "YES" ]]; then