diff --git a/.gitignore b/.gitignore
index 2b6c8350458..c2773fd8f22 100644
--- a/.gitignore
+++ b/.gitignore
@@ -158,11 +158,12 @@ sorc/ocnicepost.fd
 # jobs symlinks
 # scripts symlinks
 scripts/exemcsfc_global_sfc_prep.sh
+scripts/exgdas_global_marine_analysis_ecen.py
+scripts/exglobal_prep_ocean_obs.py
 # ush symlinks
 ush/chgres_cube.sh
 ush/emcsfc_ice_blend.sh
 ush/emcsfc_snow.sh
-ush/exglobal_prep_ocean_obs.py
 ush/fix_precip.sh
 ush/fv3gfs_driver_grid.sh
 ush/fv3gfs_filter_topo.sh
diff --git a/jobs/JGDAS_GLOBAL_OCEAN_ANALYSIS_ECEN b/jobs/JGDAS_GLOBAL_OCEAN_ANALYSIS_ECEN
index c4ad80c9e33..7b8bb848094 100755
--- a/jobs/JGDAS_GLOBAL_OCEAN_ANALYSIS_ECEN
+++ b/jobs/JGDAS_GLOBAL_OCEAN_ANALYSIS_ECEN
@@ -5,6 +5,15 @@ source "${HOMEgfs}/ush/jjob_header.sh" -e "ocnanalecen" -c "base ocnanal ocnanal
 ##############################################
 # Set variables used in the script
 ##############################################
+# Ignore possible spelling error (nothing is misspelled)
+# shellcheck disable=SC2153
+GDATE=$(date --utc +%Y%m%d%H -d "${PDY} ${cyc} - ${assim_freq} hours")
+export gPDY=${GDATE:0:8}
+export gcyc=${GDATE:8:2}
+
+YMD=${gPDY} HH=${gcyc} declare_from_tmpl -rx \
+   COM_OCEAN_HISTORY_PREV:COM_OCEAN_HISTORY_TMPL \
+   COM_ICE_HISTORY_PREV:COM_ICE_HISTORY_TMPL
 
 ##############################################
 # Begin JOB SPECIFIC work
diff --git a/sorc/link_workflow.sh b/sorc/link_workflow.sh
index b92ae0e757d..bd40b362b90 100755
--- a/sorc/link_workflow.sh
+++ b/sorc/link_workflow.sh
@@ -151,6 +151,14 @@ done
 
 cd "${HOMEgfs}/scripts" || exit 8
 ${LINK_OR_COPY} "${HOMEgfs}/sorc/ufs_utils.fd/scripts/exemcsfc_global_sfc_prep.sh" .
+if [[ -d "${HOMEgfs}/sorc/gdas.cd" ]]; then
+  declare -a gdas_scripts=(exglobal_prep_ocean_obs.py \
+                           exgdas_global_marine_analysis_ecen.py \
+                           )
+  for gdas_script in "${gdas_scripts[@]}" ; do
+    ${LINK_OR_COPY} "${HOMEgfs}/sorc/gdas.cd/scripts/${gdas_script}" .
+  done
+fi
 cd "${HOMEgfs}/ush" || exit 8
 for file in emcsfc_ice_blend.sh global_cycle_driver.sh emcsfc_snow.sh global_cycle.sh; do
   ${LINK_OR_COPY} "${HOMEgfs}/sorc/ufs_utils.fd/ush/${file}" .
@@ -227,7 +235,6 @@ if [[ -d "${HOMEgfs}/sorc/gdas.cd/build" ]]; then
   ${LINK_OR_COPY} "${HOMEgfs}/sorc/gdas.cd/ush/jediinc2fv3.py"                     .
   ${LINK_OR_COPY} "${HOMEgfs}/sorc/gdas.cd/ush/ioda/bufr2ioda/run_bufr2ioda.py"    .
   ${LINK_OR_COPY} "${HOMEgfs}/sorc/gdas.cd/build/bin/imsfv3_scf2ioda.py"           .
-  ${LINK_OR_COPY} "${HOMEgfs}/sorc/gdas.cd/scripts/exglobal_prep_ocean_obs.py"           .
 fi
 
 
diff --git a/workflow/applications/gfs_cycled.py b/workflow/applications/gfs_cycled.py
index e492aa0bfd6..fdb81205db4 100644
--- a/workflow/applications/gfs_cycled.py
+++ b/workflow/applications/gfs_cycled.py
@@ -43,8 +43,10 @@ def _get_app_configs(self):
             configs += ['anal', 'analdiag']
 
         if self.do_jediocnvar:
-            configs += ['prepoceanobs', 'ocnanalprep', 'ocnanalbmat',
-                        'ocnanalrun', 'ocnanalchkpt', 'ocnanalpost']
+            configs += ['prepoceanobs', 'ocnanalprep', 'ocnanalbmat', 'ocnanalrun']
+            if self.do_hybvar:
+                configs += ['ocnanalecen']
+            configs += ['ocnanalchkpt', 'ocnanalpost']
             if self.do_vrfy_oceanda:
                 configs += ['ocnanalvrfy']
 
@@ -139,9 +141,10 @@ def get_task_names(self):
             gdas_gfs_common_tasks_before_fcst += ['anal']
 
         if self.do_jediocnvar:
-            gdas_gfs_common_tasks_before_fcst += ['prepoceanobs', 'ocnanalprep',
-                                                  'ocnanalbmat', 'ocnanalrun',
-                                                  'ocnanalchkpt', 'ocnanalpost']
+            gdas_gfs_common_tasks_before_fcst += ['prepoceanobs', 'ocnanalprep', 'ocnanalbmat', 'ocnanalrun']
+            if self.do_hybvar:
+                gdas_gfs_common_tasks_before_fcst += ['ocnanalecen']
+            gdas_gfs_common_tasks_before_fcst += ['ocnanalchkpt', 'ocnanalpost']
             if self.do_vrfy_oceanda:
                 gdas_gfs_common_tasks_before_fcst += ['ocnanalvrfy']
 
diff --git a/workflow/rocoto/gfs_tasks.py b/workflow/rocoto/gfs_tasks.py
index 75760e55e18..db0e6af26db 100644
--- a/workflow/rocoto/gfs_tasks.py
+++ b/workflow/rocoto/gfs_tasks.py
@@ -677,11 +677,38 @@ def ocnanalrun(self):
 
         return task
 
-    def ocnanalchkpt(self):
+    def ocnanalecen(self):
 
         deps = []
         dep_dict = {'type': 'task', 'name': f'{self.cdump}ocnanalrun'}
         deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('ocnanalecen')
+        task_name = f'{self.cdump}ocnanalecen'
+        task_dict = {'task_name': task_name,
+                     'resources': resources,
+                     'dependency': dependencies,
+                     'envars': self.envars,
+                     'cycledef': self.cdump.replace('enkf', ''),
+                     'command': f'{self.HOMEgfs}/jobs/rocoto/ocnanalecen.sh',
+                     'job_name': f'{self.pslot}_{task_name}_@H',
+                     'log': f'{self.rotdir}/logs/@Y@m@d@H/{task_name}.log',
+                     'maxtries': '&MAXTRIES;'
+                     }
+
+        task = rocoto.create_task(task_dict)
+
+        return task
+
+    def ocnanalchkpt(self):
+
+        deps = []
+        if self.app_config.do_hybvar:
+            dep_dict = {'type': 'task', 'name': f'{self.cdump}ocnanalecen'}
+        else:
+            dep_dict = {'type': 'task', 'name': f'{self.cdump}ocnanalrun'}
+        deps.append(rocoto.add_dependency(dep_dict))
         if self.app_config.do_mergensst:
             data = f'&ROTDIR;/{self.cdump}.@Y@m@d/@H/atmos/{self.cdump}.t@Hz.sfcanl.nc'
             dep_dict = {'type': 'data', 'data': data}
diff --git a/workflow/rocoto/tasks.py b/workflow/rocoto/tasks.py
index 75312ba77db..e917f2c642e 100644
--- a/workflow/rocoto/tasks.py
+++ b/workflow/rocoto/tasks.py
@@ -15,7 +15,7 @@ class Tasks:
                    'prep', 'anal', 'sfcanl', 'analcalc', 'analdiag', 'arch', "cleanup",
                    'prepatmiodaobs', 'atmanlinit', 'atmanlrun', 'atmanlfinal',
                    'prepoceanobs',
-                   'ocnanalprep', 'ocnanalbmat', 'ocnanalrun', 'ocnanalchkpt', 'ocnanalpost', 'ocnanalvrfy',
+                   'ocnanalprep', 'ocnanalbmat', 'ocnanalrun', 'ocnanalecen', 'ocnanalchkpt', 'ocnanalpost', 'ocnanalvrfy',
                    'earc', 'ecen', 'echgres', 'ediag', 'efcs',
                    'eobs', 'eomg', 'epos', 'esfc', 'eupd',
                    'atmensanlinit', 'atmensanlrun', 'atmensanlfinal',