[develop] Fixes to enable stochastic physics (#870)

These changes allow ensemble mode to use seeds generated to be unique to the forecast cycle and ensemble member, and they also allow stochastic physics to be turned on in deterministic mode.
ufs-community · Jul 28, 2023 · 26b3ac8 · 26b3ac8
1 parent eb90788
commit 26b3ac8
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Showing 4 changed files with 10 additions and 11 deletions.
diff --git a/scripts/exregional_run_fcst.sh b/scripts/exregional_run_fcst.sh
@@ -444,12 +444,12 @@ fi
 #-----------------------------------------------------------------------
 #
 STOCH="FALSE"
-if [ "${DO_ENSEMBLE}" = "TRUE" ] && ([ "${DO_SPP}" = "TRUE" ] || [ "${DO_SPPT}" = "TRUE" ] || [ "${DO_SHUM}" = "TRUE" ] || \
+if ([ "${DO_SPP}" = "TRUE" ] || [ "${DO_SPPT}" = "TRUE" ] || [ "${DO_SHUM}" = "TRUE" ] || \
    [ "${DO_SKEB}" = "TRUE" ] || [ "${DO_LSM_SPP}" =  "TRUE" ]); then
      STOCH="TRUE"
 fi
 if [ "${STOCH}" == "TRUE" ]; then
-  ln_vrfy -sf ${FV3_NML_STOCH_FP} ${DATA}/${FV3_NML_FN}
+  cp_vrfy ${FV3_NML_STOCH_FP} ${DATA}/${FV3_NML_FN}
  else
   ln_vrfy -sf ${FV3_NML_FP} ${DATA}/${FV3_NML_FN}
 fi
@@ -461,8 +461,7 @@ fi
 #
 #-----------------------------------------------------------------------
 #
-if [ "$STOCH" == "TRUE" ]; then
-  cp_vrfy ${DATA}/${FV3_NML_FN} ${DATA}/${FV3_NML_FN}_base
+if ([ "$STOCH" == "TRUE" ] && [ "${DO_ENSEMBLE}" = "TRUE" ]); then
   python3 $USHdir/set_FV3nml_ens_stoch_seeds.py \
       --path-to-defns ${GLOBAL_VAR_DEFNS_FP} \
       --cdate "$CDATE" || print_err_msg_exit "\

diff --git a/tests/test_python/test_set_FV3nml_ens_stoch_seeds.py b/tests/test_python/test_set_FV3nml_ens_stoch_seeds.py
@@ -51,14 +51,14 @@ def setUp(self):
         mkdir_vrfy("-p", self.mem_dir)
         cp_vrfy(
             os.path.join(PARMdir, "input.nml.FV3"),
-            os.path.join(EXPTDIR, "input.nml_base"),
+            os.path.join(self.mem_dir, "input.nml"),
         )
 
 
         set_env_var("USHdir", USHdir)
         set_env_var("ENSMEM_INDX", 2)
         set_env_var("FV3_NML_FN", "input.nml")
-        set_env_var("FV3_NML_FP", os.path.join(EXPTDIR, "input.nml_base"))
+        set_env_var("FV3_NML_FP", os.path.join(self.mem_dir, "input.nml"))
         set_env_var("DO_SHUM", True)
         set_env_var("DO_SKEB", True)
         set_env_var("DO_SPPT", True)

diff --git a/ush/generate_FV3LAM_wflow.py b/ush/generate_FV3LAM_wflow.py
@@ -718,7 +718,7 @@ def generate_FV3LAM_wflow(
     #
     #-----------------------------------------------------------------------
     #
-    if DO_ENSEMBLE and any((DO_SPP, DO_SPPT, DO_SHUM, DO_SKEB, DO_LSM_SPP)):
+    if any((DO_SPP, DO_SPPT, DO_SHUM, DO_SKEB, DO_LSM_SPP)):
 
         set_namelist(
             [

diff --git a/ush/set_FV3nml_ens_stoch_seeds.py b/ush/set_FV3nml_ens_stoch_seeds.py
@@ -57,7 +57,7 @@ def set_FV3nml_ens_stoch_seeds(cdate):
     #
     # -----------------------------------------------------------------------
     #
-    fv3_nml_ensmem_fp = f"{os.getcwd()}{os.sep}{FV3_NML_FN}_base"
+    fv3_nml_ensmem_fp = f"{os.getcwd()}{os.sep}{FV3_NML_FN}"
 
     ensmem_num = int(ENSMEM_INDX)
 
@@ -93,14 +93,14 @@ def set_FV3nml_ens_stoch_seeds(cdate):
     if DO_LSM_SPP:
         iseed_lsm_spp = cdate_i * 1000 + ensmem_num * 10 + 9
 
-        settings["nam_sppperts"] = {"iseed_lndp": [iseed_lsm_spp]}
+        settings["nam_sfcperts"] = {"iseed_lndp": [iseed_lsm_spp]}
 
     settings_str = cfg_to_yaml_str(settings)
 
     print_info_msg(
         dedent(
             f"""
-            The variable 'settings' specifying seeds in '{FV3_NML_FP}'
+            The variable 'settings' specifying seeds in '{fv3_nml_ensmem_fp}'
             has been set as follows:
 
             settings =\n\n"""
@@ -111,7 +111,7 @@ def set_FV3nml_ens_stoch_seeds(cdate):
 
     try:
         set_namelist(
-            ["-q", "-n", FV3_NML_FP, "-u", settings_str, "-o", fv3_nml_ensmem_fp]
+            ["-q", "-n", fv3_nml_ensmem_fp, "-u", settings_str, "-o", fv3_nml_ensmem_fp]
         )
     except:
         print_err_msg_exit(