diff --git a/parm/config/gefs/config.base b/parm/config/gefs/config.base
index e98c942dcfd..477a04ddfbc 100644
--- a/parm/config/gefs/config.base
+++ b/parm/config/gefs/config.base
@@ -163,7 +163,7 @@ case "${CASE}" in
         export waveGRD='glo_500'
         ;;
     "C96" | "C192")
-        export waveGRD='glo_200'
+        export waveGRD='glo_100'
         ;;
     "C384")
         export waveGRD='glo_025'
diff --git a/parm/config/gefs/config.ufs b/parm/config/gefs/config.ufs
index 9b42e4aa822..9c39bf06deb 100644
--- a/parm/config/gefs/config.ufs
+++ b/parm/config/gefs/config.ufs
@@ -15,7 +15,7 @@ if (( $# <= 1 )); then
     echo "--fv3 C48|C96|C192|C384|C768|C1152|C3072"
     echo "--mom6 500|100|025"
     echo "--cice6 500|100|025"
-    echo "--ww3 gnh_10m;aoc_9km;gsh_15m|gwes_30m|glo_025|glo_200|glo_500|mx025"
+    echo "--ww3 gnh_10m;aoc_9km;gsh_15m|gwes_30m|glo_025|glo_200|glo_500|mx025|glo_100"
     echo "--gocart"
 
     exit 1
@@ -456,6 +456,10 @@ if [[ "${skip_ww3}" == "false" ]]; then
     "glo_025")
       ntasks_ww3=262
       ;;
+    "glo_100")
+      ntasks_ww3=20
+      nthreads_ww3=1
+      ;;
     "glo_200")
       ntasks_ww3=30
       nthreads_ww3=1
diff --git a/parm/config/gefs/config.wave b/parm/config/gefs/config.wave
index 66f19296cbb..b61a2f6e54f 100644
--- a/parm/config/gefs/config.wave
+++ b/parm/config/gefs/config.wave
@@ -56,6 +56,12 @@ case "${waveGRD}" in
     export wavepostGRD='glo_025'
     export waveuoutpGRD=${waveGRD}
     ;;
+  "glo_100")
+    #Global regular lat/lon 1deg deg grid
+    export waveinterpGRD=''
+    export wavepostGRD='glo_100'
+    export waveuoutpGRD=${waveGRD}
+    ;;
   "glo_200")
     #Global regular lat/lon 2deg deg grid
     export waveinterpGRD=''
diff --git a/parm/config/gfs/config.ufs b/parm/config/gfs/config.ufs
index a7dabd3d0e8..9f6c47ce722 100644
--- a/parm/config/gfs/config.ufs
+++ b/parm/config/gfs/config.ufs
@@ -15,7 +15,7 @@ if (( $# <= 1 )); then
     echo "--fv3 C48|C96|C192|C384|C768|C1152|C3072"
     echo "--mom6 500|100|025"
     echo "--cice6 500|100|025"
-    echo "--ww3 gnh_10m;aoc_9km;gsh_15m|gwes_30m|glo_025|glo_200|glo_500|mx025|uglo_100km|uglo_m1g16"
+    echo "--ww3 gnh_10m;aoc_9km;gsh_15m|gwes_30m|glo_025|glo_100|glo_200|glo_500|mx025|uglo_100km|uglo_m1g16"
     echo "--gocart"
 
     exit 1
@@ -561,6 +561,10 @@ if [[ "${skip_ww3}" == "false" ]]; then
     "glo_025")
       ntasks_ww3=262
       ;;
+    "glo_100")
+      ntasks_ww3=20
+      nthreads_ww3=1
+      ;;
     "glo_200")
       ntasks_ww3=30
       nthreads_ww3=1
diff --git a/parm/config/gfs/config.wave b/parm/config/gfs/config.wave
index 3c643c79962..7253ef13965 100644
--- a/parm/config/gfs/config.wave
+++ b/parm/config/gfs/config.wave
@@ -56,6 +56,12 @@ case "${waveGRD}" in
     export wavepostGRD='glo_025'
     export waveuoutpGRD=${waveGRD}
     ;;
+  "glo_100")
+    #Global regular lat/lon 1deg deg grid
+    export waveinterpGRD=''
+    export wavepostGRD='glo_100'
+    export waveuoutpGRD=${waveGRD}
+    ;;
   "glo_200")
     #Global regular lat/lon 2deg deg grid
     export waveinterpGRD=''
diff --git a/parm/wave/ww3_grib2.glo_100.inp.tmpl b/parm/wave/ww3_grib2.glo_100.inp.tmpl
new file mode 100755
index 00000000000..ddfabdb13de
--- /dev/null
+++ b/parm/wave/ww3_grib2.glo_100.inp.tmpl
@@ -0,0 +1,9 @@
+$ WAVEWATCH-III gridded output input file 
+$ ----------------------------------------
+TIME DT NT
+N
+FLAGS
+$
+TIME  7 MODNR GRIDNR 0 0
+$
+$ end of input file
diff --git a/scripts/exgfs_wave_post_gridded_sbs.sh b/scripts/exgfs_wave_post_gridded_sbs.sh
index 3b103b8dd30..cee6d40b49b 100755
--- a/scripts/exgfs_wave_post_gridded_sbs.sh
+++ b/scripts/exgfs_wave_post_gridded_sbs.sh
@@ -287,6 +287,7 @@ source "${USHgfs}/preamble.sh"
               glo_15mxt) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11 ;;
               reg025) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11 ;;
               glo_025) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11 ;;
+              glo_100) GRDNAME='global' ; GRDRES=1p00 ; GRIDNR=255  ; MODNR=11 ;;
               glo_200) GRDNAME='global' ; GRDRES=2p00 ; GRIDNR=255  ; MODNR=11 ;;
               glo_500) GRDNAME='global' ; GRDRES=5p00 ; GRIDNR=255  ; MODNR=11 ;;
               glo_30mxt) GRDNAME='global' ; GRDRES=0p50 ; GRIDNR=255  ; MODNR=11 ;;
@@ -321,7 +322,8 @@ source "${USHgfs}/preamble.sh"
               glo_15mxt) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11   ;;
               reg025) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11   ;;
               glo_025) GRDNAME='global' ; GRDRES=0p25 ; GRIDNR=255  ; MODNR=11 ;;
-              glo_200) GRDNAME='global' ; GRDRES=2p00 ; GRIDNR=255  ; MODNR=11 ;;
+              glo_100) GRDNAME='global' ; GRDRES=1p00 ; GRIDNR=255  ; MODNR=11 ;;
+	      glo_200) GRDNAME='global' ; GRDRES=2p00 ; GRIDNR=255  ; MODNR=11 ;;
               glo_500) GRDNAME='global' ; GRDRES=5p00 ; GRIDNR=255  ; MODNR=11 ;;
               gwes_30m) GRDNAME='global' ; GRDRES=0p50 ; GRIDNR=255  ; MODNR=10 ;;
           esac