set fcst_dt to 20 for conus3km and south3.5km, and change FCST_SUBSteps to FCST_SUBSTEPS for reading FCST_SUBSTEPS setting in config.meshdep correctly

Author: Junjun-NOAA

workflow/config_resources/config.meshdep

@@ -56,7 +56,7 @@ elif [[ ${MESH_NAME} == "conus12km" ]]; then
   export NONVAR_SEARCH_RAD=4
 
 elif [[ ${MESH_NAME} == "conus3km" ]]; then
-  export FCST_DT=15
+  export FCST_DT=20
   export FCST_SUBSTEPS=4
   export FCST_RADT=15
   export UPP_DOMAIN="conus."
@@ -83,7 +83,7 @@ elif [[ ${MESH_NAME} == "conus3km" ]]; then
   export NONVAR_SEARCH_RAD=1
 
 elif [[ ${MESH_NAME} == "south3.5km" ]]; then
-  export FCST_DT=25
+  export FCST_DT=20
   export FCST_SUBSTEPS=4
   export FCST_RADT=15
   export UPP_DOMAIN="subconus."

workflow/rocoto_funcs/fcst.py

@@ -32,7 +32,7 @@ def fcst(xmlFile, expdir, do_ensemble=False, do_spinup=False):
         'PHYSICS_SUITE': f'{physics_suite}',
         'FCST_LEN_HRS_CYCLES': f'{fcst_len_hrs_cycles}',
         'FCST_DT': os.getenv('FCST_DT', 'FCST_DT_not_defined'),
-        'FCST_SUBSteps': os.getenv('FCST_SUBSTEPS', 'FCST_SUBSTEPS_not_defined'),
+        'FCST_SUBSTEPS': os.getenv('FCST_SUBSTEPS', 'FCST_SUBSTEPS_not_defined'),
         'FCST_RADT': os.getenv('FCST_RADT', 'FCST_RADT_not_defined'),
     }
     if os.getenv('FCST_CONVECTION_SCHEME', 'FALSE').upper() == 'TRUE':