ufs-community · GeorgeGayno-NOAA · Dec 22, 2023 · Dec 7, 2023 · Dec 7, 2023 · Dec 7, 2023
diff --git a/driver_scripts/driver_grid.hera.sh b/driver_scripts/driver_grid.hera.sh
@@ -115,7 +115,7 @@ if [ $gtype = uniform ]; then
   export add_lake=true         # Add lake frac and depth to orography data.
   export lake_cutoff=0.50      # return 0 if lake_frac <  lake_cutoff & add_lake=T
   export binary_lake=1         # return 1 if lake_frac >= lake_cutoff & add_lake=T
-  export ocn=${ocn:-"025"}     # use one of  "025", "050", "100", "500". Cannot be empty
+  export ocn=${ocn:-"100"}     # use one of  "025", "050", "100", "500". Cannot be empty
 elif [ $gtype = stretch ]; then
   export res=96
   export stretch_fac=1.5       # Stretching factor for the grid
@@ -159,7 +159,7 @@ fi
 
 export home_dir=$SLURM_SUBMIT_DIR/..
 export TEMP_DIR=/scratch2/NCEPDEV/stmp1/$LOGNAME/fv3_grid.$gtype
-export out_dir=/scratch2/NCEPDEV/stmp1/$LOGNAME/my_grids_ocean_fixed/
+export out_dir=/scratch2/NCEPDEV/stmp1/$LOGNAME/my_grids
 
 #-----------------------------------------------------------------------
 # Should not need to change anything below here.

diff --git a/reg_tests/chgres_cube/c192.fv3.history.sh b/reg_tests/chgres_cube/c192.fv3.history.sh
@@ -14,6 +14,7 @@ rm -fr $DATA
 
 export CRES=192
 export FIXfv3=${HOMEreg}/fix/C192
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/fv3.history
 
 # Pay attention to the quotes.  Dont start/end with double quote.

diff --git a/reg_tests/chgres_cube/c192.gfs.grib2.sh b/reg_tests/chgres_cube/c192.gfs.grib2.sh
@@ -14,6 +14,7 @@ rm -fr $DATA
 
 export CRES=192
 export FIXfv3=${HOMEreg}/fix/C192
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/gfs.grib2
 
 export GRIB2_FILE_INPUT=gfs.t00z.pgrb2.0p50.f000

diff --git a/reg_tests/chgres_cube/c96.fv3.nemsio.sh b/reg_tests/chgres_cube/c96.fv3.nemsio.sh
@@ -13,6 +13,7 @@ export DATA=$OUTDIR/c96_fv3_nemsio
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/fv3.nemsio
 export ATM_FILES_INPUT=gfs.t12z.atmf000.nemsio
 export SFC_FILES_INPUT=gfs.t12z.sfcf000.nemsio

diff --git a/reg_tests/chgres_cube/c96.fv3.netcdf.sh b/reg_tests/chgres_cube/c96.fv3.netcdf.sh
@@ -13,6 +13,7 @@ export DATA=$OUTDIR/c96_fv3_netcdf
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/fv3.netcdf
 export ATM_FILES_INPUT=gfs.t00z.atmf000.nc
 export SFC_FILES_INPUT=gfs.t00z.sfcf000.nc

diff --git a/reg_tests/chgres_cube/c96.fv3.restart.sh b/reg_tests/chgres_cube/c96.fv3.restart.sh
@@ -13,6 +13,7 @@ export DATA=$OUTDIR/c96_fv3_restart
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/fv3.restart
 export VCOORD_FILE=${HOMEufs}/fix/am/global_hyblev.l64.txt
 export INPUT_TYPE='restart'

diff --git a/reg_tests/chgres_cube/c96.gefs.grib2.sh b/reg_tests/chgres_cube/c96.gefs.grib2.sh
@@ -14,6 +14,7 @@ rm -fr $DATA
 
 export CRES=96
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/gefs.grib2
 
 export GRIB2_FILE_INPUT=gec00.t06z.pgrb2abf00

diff --git a/reg_tests/chgres_cube/c96.gfs.nemsio.sh b/reg_tests/chgres_cube/c96.gfs.nemsio.sh
@@ -13,6 +13,7 @@ export DATA=$OUTDIR/c96_gfs_nemsio
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/gfs.nemsio
 export ATM_FILES_INPUT=gfnanl.gdas.2017071700
 export SFC_FILES_INPUT=sfnanl.gdas.2017071700

diff --git a/reg_tests/chgres_cube/c96.gfs.sigio.sh b/reg_tests/chgres_cube/c96.gfs.sigio.sh
@@ -19,6 +19,7 @@ export DATA=$OUTDIR/c96_gfs_sigio
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96
+export FIXsfc=${FIXfv3}/fix_sfc
 export COMIN=${HOMEreg}/input_data/gfs.sigio
 export ATM_FILES_INPUT=gdas.t00z.sanl
 export SFC_FILES_INPUT=gdas.t00z.sfcanl

diff --git a/reg_tests/chgres_cube/c96.regional.sh b/reg_tests/chgres_cube/c96.regional.sh
@@ -15,6 +15,7 @@ export DATA=$OUTDIR/c96_regional
 rm -fr $DATA
 
 export FIXfv3=${HOMEreg}/fix/C96.regional
+export FIXsfc=${FIXfv3}/fix_sfc
 export OROG_FILES_TARGET_GRID="C96_oro_data.tile7.nc"
 export COMIN=${HOMEreg}/input_data/fv3.nemsio
 export ATM_FILES_INPUT=gfs.t12z.atmf000.nemsio

diff --git a/reg_tests/grid_gen/driver.orion.sh b/reg_tests/grid_gen/driver.orion.sh
@@ -70,7 +70,7 @@ TEST1=$(sbatch --parsable --ntasks-per-node=24 --nodes=1 -t 0:15:00 -A $PROJECT_
 #-----------------------------------------------------------------------------
 
 LOG_FILE2=${LOG_FILE}02
-TEST2=$(sbatch --parsable --ntasks-per-node=15 --nodes=2 -t 0:15:00 -A $PROJECT_CODE -q $QUEUE -J c96.viirs.bnu \
+TEST2=$(sbatch --parsable --ntasks-per-node=15 --nodes=2 -t 0:20:00 -A $PROJECT_CODE -q $QUEUE -J c96.viirs.bnu \
       -o $LOG_FILE2 -e $LOG_FILE2 ./c96.viirs.bnu.sh)
 
 #-----------------------------------------------------------------------------

diff --git a/reg_tests/update_baseline.sh b/reg_tests/update_baseline.sh
@@ -13,8 +13,8 @@ chmod 755 $base_dir
 
 if [ -d $base_dir_commit ];then
   chmod 777 $base_dir_commit
-  if [ -d $base_dir_commit/fix_sfc ]; then
-    chmod 777 $base_dir_commit/fix_sfc
+  if [ -d $base_dir_commit/sfc ]; then
+    chmod 777 $base_dir_commit/sfc
   fi
   rm -fr $base_dir_commit
 fi
@@ -32,17 +32,17 @@ done
 # The grid_gen tests have a subdirectory for
 # the surface climo fields.
 
-if [ -d ./fix_sfc ]; then
-  mkdir -p $base_dir_commit/fix_sfc
-  cd fix_sfc
+if [ -d ./sfc ]; then
+  mkdir -p $base_dir_commit/sfc
+  cd sfc
   for files in *.nc
   do 
     if [ -f $files ]; then
-      cp $files $base_dir_commit/fix_sfc
-      chmod 444 $base_dir_commit/fix_sfc/$files
+      cp $files $base_dir_commit/sfc
+      chmod 444 $base_dir_commit/sfc/$files
     fi
   done
-  chmod 555 $base_dir_commit/fix_sfc
+  chmod 555 $base_dir_commit/sfc
 fi
 
 chmod 555 $base_dir_commit

diff --git a/sorc/chgres_cube.fd/program_setup.F90 b/sorc/chgres_cube.fd/program_setup.F90
@@ -38,7 +38,7 @@ module program_setup
  character(len=500), public      :: sfc_files_input_grid(6) = "NULL" !<  File names containing input surface data. Not used for 'grib2' input type.
  character(len=500), public      :: vcoord_file_target_grid = "NULL" !<  Vertical coordinate definition file.
  character(len=500), public      :: thomp_mp_climo_file= "NULL" !<  Path/name to the Thompson MP climatology file.
- character(len=6),   public      :: cres_target_grid = "NULL" !<  Target grid resolution, i.e., C768.
+ character(len=15),  public      :: cres_target_grid = "NULL" !<  Target grid resolution, i.e., C768.
  character(len=500), public      :: atm_weight_file="NULL" !<  File containing pre-computed weights to horizontally interpolate atmospheric fields.
  character(len=25),  public      :: input_type="restart" !< Input data type: 
 !!                                 - "restart" for fv3 tiled warm restart
@@ -215,17 +215,17 @@ subroutine read_setup_namelist(filename)
  orog_dir_input_grid = trim(orog_dir_input_grid) // '/'
 
 !-------------------------------------------------------------------------
-! Determine CRES of target grid from the name of the mosaic file.
+! Determine CRES of target grid from the name of the orography file.
 !-------------------------------------------------------------------------
 
- is = index(mosaic_file_target_grid, "/", .true.)
- ie = index(mosaic_file_target_grid, "mosaic") - 1
+ is = 1
+ ie = index(orog_files_target_grid(1), "_oro_") - 1
 
- if (is == 0 .or. ie == 0) then
-   call error_handler("CANT DETERMINE CRES FROM MOSAIC FILE.", 1)
+ if (ie == 0) then
+   call error_handler("CANT DETERMINE CRES FROM OROG FILE.", 1)
  endif
 
- cres_target_grid = mosaic_file_target_grid(is+1:ie-1)
+ cres_target_grid = orog_files_target_grid(1)(is:ie)
 
  if (.not. convert_sfc .and. .not. convert_atm) then
    call error_handler("MUST CONVERT EITHER AN ATM OR SFC FILE.", 1)

diff --git a/ush/chgres_cube.sh b/ush/chgres_cube.sh
@@ -16,6 +16,13 @@ set -eux
 
 CRES=${CRES:-96}
 
+#----------------------------------------------------------------------------
+# Resolution of ocean grid. When declared, use the orography files
+# for coupled model runs. Choices are: 025, 050, 100 or 500.
+#----------------------------------------------------------------------------
+
+ocn=${ocn:-""}
+
 #----------------------------------------------------------------------------
 # Set up environment paths.
 #
@@ -34,7 +41,7 @@ HOMEufs=${HOMEufs:-${NWROOT}/ufs_util.${ufs_ver}}
 EXECufs=${EXECufs:-$HOMEufs/exec}
 FIXufs=${FIXufs:-$HOMEufs/fix}
 FIXfv3=${FIXfv3:-$FIXufs/orog/C${CRES}}
-FIXsfc=${FIXsfc:-$FIXfv3/fix_sfc}
+FIXsfc=${FIXsfc:-$FIXfv3/sfc}
 FIXam=${FIXam:-$FIXufs/am}
 
 #----------------------------------------------------------------------------
@@ -175,9 +182,15 @@ MOSAIC_FILE_TARGET_GRID=${MOSAIC_FILE_TARGET_GRID:-${FIXfv3}/C${CRES}_mosaic.nc}
 
 OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID:-NULL}
 if [ $OROG_FILES_TARGET_GRID == NULL ]; then
-  OROG_FILES_TARGET_GRID='C'${CRES}'_oro_data.tile1.nc","C'${CRES}'_oro_data.tile2.nc"'
-  OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}'_oro_data.tile3.nc","C'${CRES}'_oro_data.tile4.nc"'
-  OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}'_oro_data.tile5.nc","C'${CRES}'_oro_data.tile6.nc'
+  if [ -z "${ocn}" ];then
+    OROG_FILES_TARGET_GRID='C'${CRES}'_oro_data.tile1.nc","C'${CRES}'_oro_data.tile2.nc"'
+    OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}'_oro_data.tile3.nc","C'${CRES}'_oro_data.tile4.nc"'
+    OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}'_oro_data.tile5.nc","C'${CRES}'_oro_data.tile6.nc'
+  else
+    OROG_FILES_TARGET_GRID='C'${CRES}.mx${ocn}'_oro_data.tile1.nc","C'${CRES}.mx${ocn}'_oro_data.tile2.nc"'
+    OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}.mx${ocn}'_oro_data.tile3.nc","C'${CRES}.mx${ocn}'_oro_data.tile4.nc"'
+    OROG_FILES_TARGET_GRID=${OROG_FILES_TARGET_GRID}',"C'${CRES}.mx${ocn}'_oro_data.tile5.nc","C'${CRES}.mx${ocn}'_oro_data.tile6.nc'
+  fi
 fi
 
 THOMPSON_AEROSOL_FILE=${THOMPSON_AEROSOL_FILE:-NULL}

diff --git a/ush/global_cycle.sh b/ush/global_cycle.sh
@@ -33,8 +33,6 @@
 #                   Defaults to fix/am.
 #     FIXam        Directory for the global fixed climatology files.
 #                   Defaults to $HOMEgfs/fix/am
-#     FIXfv3        Directory for the model grid and orography netcdf
-#                   files.  Defaults to $HOMEgfs/fix/orog/${CASE}
 #     EXECgfs       Directory of the program executable.  Defaults to
 #                   $HOMEgfs/exec
 #     DATA          Working directory
@@ -234,7 +232,6 @@ gfs_ver=${gfs_ver:-v15.0.0}
 BASEDIR=${BASEDIR:-${NWROOT:-/nwprod2}}
 HOMEgfs=${HOMEgfs:-$BASEDIR/gfs_ver.${gfs_ver}}
 EXECgfs=${EXECgfs:-$HOMEgfs/exec}
-FIXfv3=${FIXfv3:-$HOMEgfs/fix/orog/$CASE}
 FIXam=${FIXam:-$HOMEgfs/fix/am}
 DATA=${DATA:-$(pwd)}
 COMIN=${COMIN:-$(pwd)}

diff --git a/ush/global_cycle_driver.sh b/ush/global_cycle_driver.sh
@@ -9,6 +9,7 @@ set -eux
 #-------------------------------------------------------------------------------------------------
 
 export CASE=${CASE:-C768}                    # resolution of tile: 48, 96, 192, 384, 768, 1152, 3072
+ocn=${ocn:-""}                               # ocean grid resolution: 025, 050, 100 or 500.
 export CDATE=${CDATE:-${cdate:-2017031900}}  # format yyyymmddhh yyyymmddhh ...
 export CDUMP=${CDUMP:-gfs}                   # gfs or gdas
 export COMPONENT=${COMPONENT:-atmos}
@@ -80,7 +81,11 @@ for n in $(seq 1 $ntiles); do
   ln -fs $COMOUT/$PDY.${cyc}0000.sfcanl_data.tile${n}.nc  $DATA/fnbgso.00$n
 
   ln -fs $FIXfv3/C${CRES}/C${CRES}_grid.tile${n}.nc       $DATA/fngrid.00$n
-  ln -fs $FIXfv3/C${CRES}/C${CRES}_oro_data.tile${n}.nc   $DATA/fnorog.00$n
+  if [ -z "${ocn}" ];then
+    ln -fs $FIXfv3/C${CRES}/C${CRES}_oro_data.tile${n}.nc   $DATA/fnorog.00$n
+  else
+    ln -fs $FIXfv3/C${CRES}/C${CRES}.mx${ocn}_oro_data.tile${n}.nc   $DATA/fnorog.00$n
+  fi
   if [[ "$DO_SNO_INC" == ".true." ]] ; then  
         ln -fs $COMIN/$PDY.${cyc}0000.xainc.tile${n}.nc      $DATA/xainc.00$n
   fi

diff --git a/ush/sfc_climo_gen.sh b/ush/sfc_climo_gen.sh
@@ -21,6 +21,8 @@
 #                               for regional grid.
 # mosaic_file                   Path/name of mosaic file.
 # res                           Resolution of cubed-sphere grid
+# ocn                           Resolution of ocean grid. When declared,
+#                               use the 'orog' files for the coupled model.
 # SAVE_DIR                      Directory where output is saved
 # WORK_DIR                      Temporary working directory
 # SOIL_TYPE_FILE                Path/name of input soil type data.
@@ -49,8 +51,6 @@ VEG_TYPE_FILE=${VEG_TYPE_FILE:-${input_sfc_climo_dir}/vegetation_type.${veg_type
 soil_type_src=${soil_type_src:-"statsgo.0.05"}
 SOIL_TYPE_FILE=${SOIL_TYPE_FILE:-${input_sfc_climo_dir}/soil_type.${soil_type_src}.nc}
 
-
-
 if [ ! -d $SAVE_DIR ]; then
   mkdir -p $SAVE_DIR
 fi
@@ -66,11 +66,11 @@ cd $WORK_DIR
 if [[ $GRIDTYPE == "nest" ]] || [[ $GRIDTYPE == "regional" ]] ; then
   the_orog_files='"C'${res}'_oro_data.tile7.nc"'
 else
-	if declare -p ocn &>/dev/null;then	
-		the_orog_files='"C'${res}.mx${ocn}'_oro_data.tile1.nc","C'${res}.mx${ocn}'_oro_data.tile2.nc","C'${res}.mx${ocn}'_oro_data.tile3.nc","C'${res}.mx${ocn}'_oro_data.tile4.nc","C'${res}.mx${ocn}'_oro_data.tile5.nc","C'${res}.mx${ocn}'_oro_data.tile6.nc"'
-	else
-		the_orog_files='"C'${res}'_oro_data.tile1.nc","C'${res}'_oro_data.tile2.nc","C'${res}'_oro_data.tile3.nc","C'${res}'_oro_data.tile4.nc","C'${res}'_oro_data.tile5.nc","C'${res}'_oro_data.tile6.nc"'
-	fi
+  if declare -p ocn &>/dev/null;then	
+     the_orog_files='"C'${res}.mx${ocn}'_oro_data.tile1.nc","C'${res}.mx${ocn}'_oro_data.tile2.nc","C'${res}.mx${ocn}'_oro_data.tile3.nc","C'${res}.mx${ocn}'_oro_data.tile4.nc","C'${res}.mx${ocn}'_oro_data.tile5.nc","C'${res}.mx${ocn}'_oro_data.tile6.nc"'
+  else
+     the_orog_files='"C'${res}'_oro_data.tile1.nc","C'${res}'_oro_data.tile2.nc","C'${res}'_oro_data.tile3.nc","C'${res}'_oro_data.tile4.nc","C'${res}'_oro_data.tile5.nc","C'${res}'_oro_data.tile6.nc"'
+  fi
 fi
 
 cat << EOF > ./fort.41

diff --git a/util/gdas_init/config b/util/gdas_init/config
@@ -44,10 +44,9 @@
 #                or incomplete. So this option may not
 #                always work. Contact george.gayno@noaa.gov
 #                if you encounter problems.
-# FRAC_ORO     - To use the latest orographic data, 
-#                set to 'yes', otherwise, set to 'no'.
-#                Note that: the latest orographic data
-#                support both frac_grid and none frac_grid in the UFS 
+# OCNRES       - Ocean grid resolution. To use the 'orog'
+#                files for the coupled model, set to 025,
+#                050, 100 or 500. Otherwise, comment out.
 #
 #-----------------------------------------------------------
 
@@ -67,11 +66,11 @@ LEVS=65
 
 CDUMP=gdas
 
-FRAC_ORO=yes
-
 CRES_HIRES=C192
 CRES_ENKF=C96
 
+OCNRES=100
+
 UFS_DIR=$PWD/../..
 
 OUTDIR=/lfs/h2/emc/stmp/$USER/gdas.init/output
@@ -116,5 +115,5 @@ else
 
 fi
 
-export EXTRACT_DIR yy mm dd hh UFS_DIR OUTDIR CRES_HIRES CRES_ENKF FRAC_ORO
+export EXTRACT_DIR yy mm dd hh UFS_DIR OUTDIR CRES_HIRES CRES_ENKF OCNRES
 export LEVS gfs_ver EXEC_DIR GDAS_INIT_DIR
diff --git a/util/gdas_init/run_pre-v14.chgres.sh b/util/gdas_init/run_pre-v14.chgres.sh
@@ -41,7 +41,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/run_v14.chgres.sh b/util/gdas_init/run_v14.chgres.sh
@@ -37,7 +37,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/run_v15.chgres.gfs.sh b/util/gdas_init/run_v15.chgres.gfs.sh
@@ -27,7 +27,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/run_v15.chgres.sh b/util/gdas_init/run_v15.chgres.sh
@@ -43,7 +43,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/run_v16.chgres.sh b/util/gdas_init/run_v16.chgres.sh
@@ -51,7 +51,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/run_v16retro.chgres.sh b/util/gdas_init/run_v16retro.chgres.sh
@@ -61,7 +61,7 @@ source $GDAS_INIT_DIR/set_fixed_files.sh
 cat << EOF > fort.41
 
 &config
- fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/fix_sfc"
+ fix_dir_target_grid="${FIX_ORO}/${ORO_DIR}/sfc"
  mosaic_file_target_grid="${FIX_ORO}/${ORO_DIR}/${CTAR}_mosaic.nc"
  orog_dir_target_grid="${FIX_ORO}/${ORO_DIR}"
  orog_files_target_grid="${ORO_NAME}.tile1.nc","${ORO_NAME}.tile2.nc","${ORO_NAME}.tile3.nc","${ORO_NAME}.tile4.nc","${ORO_NAME}.tile5.nc","${ORO_NAME}.tile6.nc"

diff --git a/util/gdas_init/set_fixed_files.sh b/util/gdas_init/set_fixed_files.sh
@@ -1,23 +1,13 @@
 #!/bin/bash
 
 #---------------------------------------------------------------------------
-# Set directory names and file names for orog data
-# The old and new (support fractional grid) orog data have different file names
+# Set directory names and file names for orog data.
 #---------------------------------------------------------------------------
 
-if [ "${FRAC_ORO:-"no"}" = "yes" ]; then
-  if  [ ${CTAR} == 'C48' ] ; then
-    OCNRES='500'
-  elif [ ${CTAR} == 'C96' ] ; then
-    OCNRES='100'
-  elif [ ${CTAR} == 'C192' ] ; then
-    OCNRES='050'
-  elif [ ${CTAR} == 'C384' ] || [ ${CTAR} == 'C768' ] || [ ${CTAR} == 'C1152' ]; then
-    OCNRES='025'
-  fi
-  ORO_DIR="${CTAR}.mx${OCNRES}_frac"
-  ORO_NAME="oro_${CTAR}.mx${OCNRES}"
-else
+if [ -z "${OCNRES}" ]; then  # for uncoupled runs.
   ORO_DIR="${CTAR}"
   ORO_NAME="${CTAR}_oro_data"
+else                         # for coupled runs.
+  ORO_DIR="${CTAR}"
+  ORO_NAME="${CTAR}.mx${OCNRES}_oro_data"
 fi