diff --git a/jobs/JGLOBAL_ATMOS_POST b/jobs/JGLOBAL_ATMOS_POST
index 534eb62872..b8c5c03d7f 100755
--- a/jobs/JGLOBAL_ATMOS_POST
+++ b/jobs/JGLOBAL_ATMOS_POST
@@ -2,6 +2,7 @@
 
 source "${HOMEgfs}/ush/preamble.sh"
 
+
 ##############################################
 # make temp directory
 ##############################################
@@ -78,10 +79,9 @@ fi
 ##############################################
 export APRUNP=${APRUN:-${APRUN_NP}}
 export RERUN=${RERUN:-NO}
-export HOMECRTM=${HOMECRTM:-${PACKAGEROOT}/lib/crtm/${crtm_ver}}
-export FIXCRTM=${CRTM_FIX:-${HOMECRTM}/fix}
+
 export PARMpost=${PARMpost:-${HOMEgfs}/parm/post}
-export INLINE_POST=${WRITE_DOPOST:-".false."}
+# export INLINE_POST=${WRITE_DOPOST:-".false."}
 
 export COMIN=${COMIN:-${ROTDIR}/${RUN}.${PDY}/${cyc}/atmos}
 export COMOUT=${COMOUT:-${ROTDIR}/${RUN}.${PDY}/${cyc}/atmos}
@@ -90,46 +90,14 @@ export COMOUT=${COMOUT:-${ROTDIR}/${RUN}.${PDY}/${cyc}/atmos}
 [[ ! -d "${COMOUT}" ]] && mkdir -m 775 -p "${COMOUT}"
 # shellcheck disable=
 
-if [ "${RUN}" = gfs ];then
-  export FHOUT_PGB=${FHOUT_GFS:-3} #Output frequency of gfs pgb file at 1.0 and 0.5 deg.
-fi
-if [ "${RUN}" = gdas ]; then
-  export IGEN_GFS="gfs_avn"
-  export IGEN_ANL="anal_gfs"
-  export IGEN_FCST="gfs_avn"
-  export IGEN_GDAS_ANL="anal_gdas"
-  export FHOUT_PGB=${FHOUT:-1} #Output frequency of gfs pgb file at 1.0 and 0.5 deg.
-fi
-
-if [ "${GRIBVERSION}" = grib2 ]; then
-  export IGEN_ANL="anal_gfs"
-  export IGEN_FCST="gfs_avn"
-  export IGEN_GFS="gfs_avn"
-fi
-
-#######################################
-# Specify Restart File Name to Key Off
-#######################################
-export restart_file=${COMIN}/${RUN}.t${cyc}z.logf
-
-####################################
-# Specify Timeout Behavior of Post
-#
-# SLEEP_TIME - Amount of time to wait for
-#              a restart file before exiting
-# SLEEP_INT  - Amount of time to wait between
-#              checking for restart files
-####################################
-export SLEEP_TIME=900
-export SLEEP_INT=5
-
-
 ###############################################################
 # Run relevant exglobal script
-
-"${SCRgfs}/ex${RUN}_atmos_post.sh"
+###############################################################
+"${HOMEgfs}/scripts/exglobal_atmos_post.sh"
 status=$?
-(( status != 0 )) && exit "${status}"
+if (( status != 0 )); then
+  exit "${status}"
+fi  
 
 ##############################################
 # End JOB SPECIFIC work
diff --git a/jobs/rocoto/post.sh b/jobs/rocoto/post.sh
index bc7da5709a..9549b3e74f 100755
--- a/jobs/rocoto/post.sh
+++ b/jobs/rocoto/post.sh
@@ -25,10 +25,9 @@ fi
 
 
 #---------------------------------------------------------------
-for fhr in ${fhrlst}; do
-    export post_times=${fhr}
-    export job="post${post_times}"
-    export jobid="${job}.$$"
+
+for fhr in $fhrlst; do
+    export fhr
     ${HOMEgfs}/jobs/JGLOBAL_ATMOS_POST
     status=$?
     [[ ${status} -ne 0 ]] && exit ${status}
diff --git a/modulefiles/module_base.orion.lua b/modulefiles/module_base.orion.lua
index e838355555..ff78c3825e 100644
--- a/modulefiles/module_base.orion.lua
+++ b/modulefiles/module_base.orion.lua
@@ -57,7 +57,7 @@ prepend_path("MODULEPATH", "/work2/noaa/global/wkolczyn/save/hpc-stack/modulefil
 load(pathJoin("hpc", "1.2.0"))
 load(pathJoin("hpc-intel", "2018.4"))
 load(pathJoin("hpc-miniconda3", "4.6.14"))
-load(pathJoin("ufswm", "1.0.0"))
+load(pathJoin("gfs_workflow", "1.0.0"))
 load(pathJoin("met", "9.1"))
 load(pathJoin("metplus", "3.1"))
 
diff --git a/parm/config/config.post b/parm/config/config.post
index cdea64e2a3..780abd8a6b 100755
--- a/parm/config/config.post
+++ b/parm/config/config.post
@@ -13,30 +13,15 @@ echo "BEGIN: config.post"
 
 # No. of concurrent post jobs [0 implies sequential]
 export NPOSTGRP=42
-export OUTTYP=4
-export MODEL_OUT_FORM=binarynemsiompiio
-if [ $OUTPUT_FILE = "netcdf" ]; then
-    export MODEL_OUT_FORM=netcdfpara
-fi
 
 # Post driver job that calls gfs_post.sh and downstream jobs
 export POSTJJOBSH="$HOMEpost/jobs/JGLOBAL_POST"
-export GFSDOWNSH="$HOMEpost/ush/fv3gfs_downstream_nems.sh"
-export GFSDWNSH="$HOMEpost/ush/fv3gfs_dwn_nems.sh"
-
-export POSTGPSH="$HOMEpost/ush/gfs_post.sh"
-export POSTGPEXEC="$HOMEpost/exec/upp.x"
 export GOESF=NO                              # goes image
-export FLXF=YES                               # grib2 flux file written by post
 
 export npe_postgp=$npe_post
 export nth_postgp=1
 
-export GFS_DOWNSTREAM="YES"
-export downset=2
-export npe_dwn=24
 
-export GRIBVERSION='grib2'
 export SENDCOM="YES"
 
 echo "END: config.post"
diff --git a/parm/post/atm_post.yaml b/parm/post/atm_post.yaml
new file mode 100644
index 0000000000..08a07dc16f
--- /dev/null
+++ b/parm/post/atm_post.yaml
@@ -0,0 +1,20 @@
+work_dir: !ENV ${DATA}
+tmpl_file: !ENV ${PARMpost}/post.nml.j2
+mp_file: !ENV ${PARMpost}/nam_micro_lookup.dat
+grib_out: !ENV ${COMOUT}/${RUN}.${cycle}.master.grb2f${fhr}
+grib_idx_out: !ENV ${COMOUT}/${RUN}.${cycle}.master.grb2if${fhr}
+exe_log_file: !ENV ${pgmout}
+out_form: 'netcdfpara'
+cdate: !ENV ${CDATE}
+fhr: !ENV ${fhr}
+grib_version: 'grib2'
+grib_table: !ENV ${g2tmpl_ROOT}/share/params_grib2_tbl_new
+post_variables: 'KPO=57,PO=1000.,975.,950.,925.,900.,875.,850.,825.,800.,775.,750.,725.,700.,675.,650.,625.,600.,575.,550.,525.,500.,475.,450.,425.,400.,375.,350.,325.,300.,275.,250.,225.,200.,175.,150.,125.,100.,70.,50.,40.,30.,20.,15.,10.,7.,5.,3.,2.,1.,0.7,0.4,0.2,0.1,0.07,0.04,0.02,0.01,'
+post_exe: !ENV ${HOMEgfs}/exec/upp.x
+grib_idx_exe: !ENV ${GRB2INDEX}
+mpi_run: !ENV ${APRUNP}
+sleep_max: 900
+sleep_interval: 5
+send_com: !ENV ${SENDCOM}
+send_dbn: !ENV ${SENDDBN}
+dbn_alert: !ENV ${DBNROOT}/bin/dbn_alert
diff --git a/parm/post/atm_post_gfs_anl.yaml b/parm/post/atm_post_gfs_anl.yaml
new file mode 100644
index 0000000000..aec361eea8
--- /dev/null
+++ b/parm/post/atm_post_gfs_anl.yaml
@@ -0,0 +1,15 @@
+include:
+  - !INC ${PARMpost}/atm_post.yaml
+
+atm_file: !ENV ${COMIN}/${RUN}.${cycle}.atmanl.nc
+sfc_file: !ENV ${COMIN}/${RUN}.${cycle}.sfcanl.nc
+trigger_file: !ENV ${COMIN}/${RUN}.${cycle}.atmanl.nc
+
+igen: anal_gfs
+flat_file: !ENV ${PARMpost}/postxconfig-NT-GFS-ANL.txt
+ctrl_file: !ENV ${PARMpost}/postcntrl_gfs_anl.xml
+grib2_table: !ENV ${g2tmpl_ROOT}/share/params_grib2_tbl_new
+
+dbn_signals:
+  GFS_SA: !ENV ${COMIN}/${RUN}.${cycle}.atmanl.nc
+  GFS_MSC_sfcanal: !ENV ${COMIN}/${RUN}.${cycle}.sfcanl.nc
diff --git a/parm/post/atm_post_gfs_f000.yaml b/parm/post/atm_post_gfs_f000.yaml
new file mode 100644
index 0000000000..cd93113931
--- /dev/null
+++ b/parm/post/atm_post_gfs_f000.yaml
@@ -0,0 +1,15 @@
+include:
+  - !INC ${PARMpost}/atm_post.yaml
+
+atm_file: !ENV ${COMIN}/${RUN}.${cycle}.atmf000.nc
+sfc_file: !ENV ${COMIN}/${RUN}.${cycle}.sfcf000.nc
+trigger_file: !ENV ${COMIN}/${CDUMP}.t${cyc}z.logf000.txt
+
+igen: gfs_avn
+flat_file: !ENV ${PARMpost}/postxconfig-NT-GFS-F00.txt
+ctrl_file: !ENV ${PARMpost}/postcntrl_gfs_f00.xml
+grib2_table: !ENV ${g2tmpl_ROOT}/share/params_grib2_tbl_new
+
+dbn_signals:
+  GFS_SA: !ENV ${COMIN}/${RUN}.${cycle}.atmf000.nc
+  GFS_MSC_sfcanal: !ENV ${COMIN}/${RUN}.${cycle}.sfcf000.nc
\ No newline at end of file
diff --git a/parm/post/atm_post_gfs_fhr.yaml b/parm/post/atm_post_gfs_fhr.yaml
new file mode 100644
index 0000000000..c72886c8b8
--- /dev/null
+++ b/parm/post/atm_post_gfs_fhr.yaml
@@ -0,0 +1,11 @@
+include:
+  - !INC ${PARMpost}/atm_post.yaml
+
+atm_file: !ENV ${COMIN}/${RUN}.${cycle}.atmf${fhr}.nc
+sfc_file: !ENV ${COMIN}/${RUN}.${cycle}.sfcf${fhr}.nc
+trigger_file: !ENV ${COMIN}/${CDUMP}.t${cyc}z.logf${fhr}.txt
+
+igen: gfs_avn
+flat_file: !ENV ${PARMpost}/postxconfig-NT-GFS.txt
+ctrl_file: !ENV ${PARMpost}/postcntrl_gfs.xml
+grib2_table: !ENV ${g2tmpl_ROOT}/share/params_grib2_tbl_new
\ No newline at end of file
diff --git a/parm/post/post.nml.j2 b/parm/post/post.nml.j2
new file mode 100644
index 0000000000..5c363b4c5e
--- /dev/null
+++ b/parm/post/post.nml.j2
@@ -0,0 +1,12 @@
+&model_inputs
+	fileName='atm_file'
+	fileNameFlux='sfc_file'
+	IOFORM='{{out_form}}'
+	grib='{{grib_version}}'
+	DateStr='%Y-%m-%d_%H:%M:%S'
+	MODELNAME='GFS'
+/
+
+&NAMPGB
+	{{post_variables}}
+/
diff --git a/scripts/exglobal_atmos_post.sh b/scripts/exglobal_atmos_post.sh
new file mode 100755
index 0000000000..1d610ac707
--- /dev/null
+++ b/scripts/exglobal_atmos_post.sh
@@ -0,0 +1,17 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+# Determine which yaml file to use
+case ${fhr} in
+	anl) yaml_cat='anl' ;;
+	000) yaml_cat='f000';;
+	*)   yaml_cat='fhr' ;;
+esac
+post_settings="${PARMpost}/atm_post_${CDUMP}_${yaml_cat}.yaml"
+
+# Run post
+"${HOMEgfs}/ush/atm_post.py" "${post_settings}"
+err=$?
+
+exit ${err}
diff --git a/ush/atm_post.py b/ush/atm_post.py
new file mode 100755
index 0000000000..d0cda7070f
--- /dev/null
+++ b/ush/atm_post.py
@@ -0,0 +1,300 @@
+#! /usr/bin/env python3
+
+import os
+import shutil
+import glob
+import subprocess
+import time
+from datetime import timedelta
+from argparse import ArgumentParser
+from python.pygw.src.pygw import timetools
+from python.pygw.src.pygw.template import Template, TemplateConstants
+from python.pygw.src.pygw.fsutils import mkdir, chdir, rm_p
+from python.pygw.src.pygw.yaml_file import YAMLFile
+from pprint import pprint
+from functools import partial
+
+# Make sure print is flushed immediately
+print = partial(print, flush=True)
+
+
+def run_post(settings: dict) -> None:
+    '''
+    Runs UPP as an MPI job, then creates an index file.
+
+    Parameters
+    ----------
+    settings : dict
+               Dictionary of settings needed to run post. Dictionary must include
+               the following keys/value pairs:
+                   mpi_run      : str
+                                  Command to execute an mpi job
+                   grib_idx_exe : str
+                                  Path to program that creates a grib index file
+                   exe_log_file : str
+                                  Path to log file for executables
+
+    Returns
+    -------
+    None
+
+    Input files
+    -----------
+    The following must be in the current directory:
+    upp.x : Post executable
+    itag  : Post namelist
+
+    Output files
+    ------------
+    pgbfile : GRiB2 file for input data on gaussian grid
+    pgifile : GRiB2 index of pgbfile
+
+    '''
+    with open('itag', 'r') as file:
+        print(f'''
+                Executing {settings['post_exe']} (copied as upp.x) with the
+                following namelist:
+                    {file.read()}
+
+                Output will be written to {settings['exe_log_file']}
+
+                '''
+              )
+    os.environ['PGBOUT'] = 'pgbfile'
+    subprocess.run(f"{settings['mpi_run']} upp.x > {settings['exe_log_file']}", shell=True, check=True)
+    subprocess.run(f"{settings['grib_idx_exe']} pgbfile pgifile >> {settings['exe_log_file']}",
+                   shell=True, check=True)
+
+
+def make_namelist(settings: dict) -> str:
+    '''
+    Takes a namelist template and substitutes in variables and the verification time.
+
+    Parameters
+    ----------
+    settings : dict
+               Dictionary contaning the name of the template file, the initial time and
+               forecast hour, and the variables to substitute. At a minimum, the
+               dictionary must have the following key/value pairs:
+                   tmpl_file : str
+                               Path to the template
+                   cdate     : str
+                               Initial time in YYYYMMDDHH format
+                   fhr       : str
+                               Forecast hour (parsable to int) or anl
+
+    Returns
+    -------
+    str
+        String representation of the template file, with substitutions for all of the
+        variables in the template that are present in settings, and for all strftime
+        format codes (%Y, %m, etc.).
+
+    '''
+    with open(settings['tmpl_file'], 'r') as file:
+        tmpl = file.read()
+
+    tmpl = Template.substitute_structure(tmpl, TemplateConstants.DOUBLE_CURLY_BRACES, settings.get)
+    delta = 0 if settings['fhr'] in ['anl'] else int(settings['fhr'])
+    when = timetools.strptime(settings['cdate'], "%Y%m%d%H") + timedelta(hours=delta)
+    tmpl = timetools.strftime(when, tmpl)
+
+    return(tmpl)
+
+
+def wait_for_model_output(settings: dict) -> None:
+    '''
+    Repeatedly sleeps while waiting for trigger file to be available. Will return
+    once the file is present. If the file does not exist after the maximum wait
+    time, an exception will be thrown.
+
+    Parameters
+    ----------
+    settings : dict
+               Dictionary containing the needed settings. The dictional must specify
+               the following key/value pairs:
+                   trigger_file   : str
+                                    Path to file we are waiting for
+                   sleep_interval : int
+                                    Time to sleep between checks (in seconds)
+                   sleep_max      : int
+                                    Maximum number of seconds to wait
+
+    Returns
+    -------
+    None
+
+    Raises
+    ------
+    RuntimeException
+        If trigger_file still does not exist after sleep_max seconds
+
+    '''
+
+    sleep_max = settings['sleep_max']
+    sleep_interval = settings['sleep_interval']
+    trigger_file = settings['trigger_file']
+
+    for timer in range(0, sleep_max // sleep_interval):
+        if os.path.isfile(trigger_file):
+            # File exists, job can proceed
+            return
+
+        time.sleep(sleep_interval)
+
+    raise RuntimeError(f"File {trigger_file} does not exist after waiting {sleep_max}s")
+
+
+def test_make_namelist() -> None:
+    settings = {
+        "cdate": '2021061512',
+        "fhr": '012',
+        "atm_file": "dummy_atm_file",
+        "flux_file": "dummy_flux_file",
+        "out_form": "netcdfpara",
+        "grib_version": "2",
+        "post_variables": "test list of post vars",
+        "tmpl_file": "../parm/post/post.nml.j2"
+    }
+    print(make_namelist(settings))
+
+
+def stage_post(settings: dict, nml_filename: str = 'itag') -> None:
+    '''
+    Stages all the necessary files and executables to run post.
+
+    Parameters
+    ----------
+    settings     : dict
+                   Dictionary containing all the needed settings to stage. Dictionary must
+                   contain the following key/value pairs:
+                       work_dir   : str
+                                    The temporary working directory to use
+                       atm_file   : str
+                                    Raw atmosphere model output in NetCDF format. Will be copied
+                                    to work_dir as atm_file.
+                       sfc_file   : str
+                                    Raw atmosphere flux output in NetCDF format. Will be copied
+                                    to work_dir as sfc_file.
+                       flat_file  : str
+                                    Post 'flat' file. Will be copied to work_dir as
+                                    postxconfig-NT.txt.
+                       grib_table : str
+                                    Grib2 table. Will be copied to work_dir.
+                       mp_file    : str
+                                    Microphysics .dat file. Will be copied to work_dir as
+                                    eta_micro_lookup.dat.
+                       post_exe   : str
+                                    Path to the post executable. Will be copied to work_dir as
+                                    upp.x
+
+                   Additionally, the following key/value pair may be defined:
+                       is_ens     : bool
+                                    Whether data is an ensemble member (default is False)
+
+    nml_filename : str
+                   File name for the namelist file. UPP currently expects this to be 'itag'.
+                   [Default: 'itag']
+
+    '''
+    work_dir = settings['work_dir']
+    mkdir(work_dir)
+    chdir(work_dir)
+
+    namelist = make_namelist(settings)
+    with open(nml_filename, 'w') as file:
+        file.write(namelist)
+
+    shutil.copy(settings['flat_file'], 'postxconfig-NT.txt')
+    shutil.copy(settings['grib_table'], './')
+    shutil.copy(settings['mp_file'], 'eta_micro_lookup.dat')
+    shutil.copy(settings['atm_file'], 'atm_file')
+    shutil.copy(settings['sfc_file'], 'sfc_file')
+    shutil.copy(settings['post_exe'], 'upp.x')
+
+    if settings.get('is_ens', False):
+        # TODO replace negatively_post_fcst with ${ens_pert_type} in postxconfig-NT.txt
+        # sed < "${PostFlatFile}" -e "s#negatively_pert_fcst#${ens_pert_type}#" > ./postxconfig-NT.txt
+        pass
+
+
+def send_com(settings: dict) -> None:
+    '''
+    Copies post output from current directory to final destination. The current directory
+    must have files names pgbfile and pgifile for the master grib file and its index,
+    repsectively.
+
+    Parameters
+    ----------
+    settings : dict
+               Dictionary with paths for the final file names. The following key/value
+               pairs must be defined:
+               grib_out     : str
+                              File name for the master grib file
+               grib_idx_out : str
+                              File naem for the master grib file index
+
+    Returns
+    -------
+    None
+
+    '''
+    shutil.copyfile('pgbfile', settings['grib_out'])
+    shutil.copyfile('pgifile', settings['grib_idx_out'])
+
+
+def send_dbn(settings: dict) -> None:
+    '''
+    Sends specified alerts to the data broadcast network (DBN).
+
+    Parameters
+    ----------
+    settings : dict
+               Dictionary with paths for the final file names. The following key/value
+               pairs must be defined:
+               dbn_alert   : str
+                             The command to send a DBN alert
+               dbn_signals : dict
+                             Sub-dictionary with a list of signals (keys) and the files they are
+                             signalling (values)
+
+    '''
+    for signal in settings.get('dbn_signals', []):
+        signal_file = settings['dbn_signals'][signal]
+        subprocess.run(f"{settings['dbn_alert']} {signal} {signal_file}", shell=True, check=True)
+
+
+if __name__ == '__main__':
+    '''
+    Runs post using a given settings file.
+
+    Parameters
+    ----------
+    settings_file : YAML file containing the settings to use for post
+
+    Returns
+    -------
+    None
+
+    '''
+    parser = ArgumentParser()
+    parser.add_argument('settings_file', help='Path to the YAML file containing the post settings')
+
+    args = parser.parse_args()
+    settings = YAMLFile(path=args.settings_file)
+    # Move all settings that are defined under include to the top level
+    # TODO make this recursive
+    for inc in settings.pop('include', []):
+        settings.update(inc)
+
+    print("Running post using the following settings:")
+    pprint(settings)
+
+    stage_post(settings=settings)
+    wait_for_model_output(settings=settings)
+    run_post(settings=settings)
+    if settings['send_com'] in ["YES"]:
+        send_com(settings)
+
+    if settings['send_dbn'] in ["YES"]:
+        send_dbn(settings)