Cleanup DATA and add missing exit

- Resolve more SC2086 shellcheck warnings and cleanup the usage
of the $DATA variable in the GSI monitor JJOB scripts.
- Add missing exit statement to end of JGFS_ATMOS_VMINMON.

Refs NOAA-EMC#1908

jobs/JGDAS_ATMOS_VERFOZN

@@ -74,10 +74,6 @@ err=$?
 ################################
 # Remove the Working Directory
 ################################
-KEEPDATA=${KEEPDATA:-NO}
-cd ${DATAROOT}
-if [ ${KEEPDATA} = NO ] ; then
-  rm -rf ${DATA}
-fi
+[[ "${KEEPDATA}" = "NO" ]] && rm -rf "${DATA}"
 
 exit 0

jobs/JGDAS_ATMOS_VERFRAD

@@ -8,14 +8,9 @@ source "${HOMEgfs}/ush/jjob_header.sh" -e "verfrad" -c "base verfrad"
 
 export COMPONENT="atmos"
 
-export RAD_DATA_IN=${DATA}
-
 export RADMON_SUFFIX=${RADMON_SUFFIX:-${RUN}}
 export CYCLE_INTERVAL=${CYCLE_INTERVAL:-6}
 
-mkdir -p ${RAD_DATA_IN}
-cd ${RAD_DATA_IN}
-
 ##############################################
 # Specify Execution Areas
 ##############################################
@@ -91,9 +86,4 @@ fi
 ################################
 # Remove the Working Directory
 ################################
-KEEPDATA=${KEEPDATA:-YES}
-cd ${DATAROOT}
-if [ ${KEEPDATA} = NO ] ; then
-  rm -rf ${RAD_DATA_IN}
-fi
-
+[[ "${KEEPDATA}" = "NO" ]] && rm -rf "${DATA}"

jobs/JGDAS_ATMOS_VMINMON

@@ -68,10 +68,6 @@ err=$?
 ################################
 # Remove the Working Directory
 ################################
-KEEPDATA=${KEEPDATA:-NO}
-cd ${DATAROOT}
-if [ ${KEEPDATA} = NO ] ; then
-  rm -rf ${DATA}
-fi
+[[ "${KEEPDATA}" = "NO" ]] && rm -rf "${DATA}"
 
 exit 0

jobs/JGFS_ATMOS_VMINMON

@@ -66,11 +66,6 @@ err=$?
 ################################
 # Remove the Working Directory
 ################################
-KEEPDATA=${KEEPDATA:-NO}
-cd ${DATAROOT}
-
-if [ ${KEEPDATA} = NO ] ; then
-  rm -rf ${DATA}
-fi
-
+[[ "${KEEPDATA}" = "NO" ]] && rm -rf "${DATA}"
 
+exit 0