diff --git a/jobs/JEVS_PREP_GLOBAL_ENS b/jobs/JEVS_PREP_GLOBAL_ENS
index 6708c278b..6de379836 100755
--- a/jobs/JEVS_PREP_GLOBAL_ENS
+++ b/jobs/JEVS_PREP_GLOBAL_ENS
@@ -84,6 +84,7 @@ export COMINobsproc=${COMINobsproc:-$(compath.py $envir/com/obsproc/${obsproc_ve
 export DCOMINnohrsc=${DCOMINnohrsc:-$DCOMROOT}
 export DCOMINosi_saf=${DCOMINosi_saf:-$DCOMROOT}
 export DCOMINghrsst=${DCOMINghrsst:-$DCOMROOT}
+export DCOMINecmwf=${DCOMINecmwf:-$DCOMROOT}
 
 export COMINgefs_bc=${COMINgefs_bc:-$COMINnaefs}
 export DCOMINcmce_bc=${DCOMINcmce_bc:-$DCOMIN}
diff --git a/ush/global_det/global_det_atmos_prep.py b/ush/global_det/global_det_atmos_prep.py
index 3dc2c2e3c..aae136c42 100644
--- a/ush/global_det/global_det_atmos_prep.py
+++ b/ush/global_det/global_det_atmos_prep.py
@@ -49,6 +49,7 @@
 STEP = os.environ['STEP']
 MODELNAME = os.environ['MODELNAME'].split(' ')
 OBSNAME = os.environ['OBSNAME'].split(' ')
+ECMWF_FILE_EXT=os.environ.get('ECMWF_FILE_EXT', '1')
 
 # Make COMOUT directory for dates
 output_INITDATE = COMOUT+'.'+INITDATE
@@ -329,13 +330,13 @@
             'fcst_hrs': range(24, 72+12, 12)},
     'ecmwf': {'input_fcst_file_format': os.path.join(DCOMINecmwf,
                                                      'U1D{init?fmt=%m%d%H}00'
-                                                     +'{valid?fmt=%m%d%H}001'),
+                                                     +'{valid?fmt=%m%d%H}00'+f'{ECMWF_FILE_EXT}'),
               'input_anl_file_format': os.path.join(DCOMINecmwf,
                                                     'U1D{init?fmt=%m%d%H}00'
-                                                    +'{init?fmt=%m%d%H}011'),
+                                                    +'{init?fmt=%m%d%H}01'+f'{ECMWF_FILE_EXT}'),
               'input_precip_file_format': os.path.join(DCOMINecmwf_precip,
                                                        'UWD{init?fmt=%Y%m%d%H%M}'
-                                                       +'{valid?fmt=%m%d%H%M}1'),
+                                                       +'{valid?fmt=%m%d%H%M}'+f'{ECMWF_FILE_EXT}'),
               'inithours': ['00', '12'],
               'fcst_hrs': range(0, 240+6, 6)},
     'fnmoc': {'input_fcst_file_format': os.path.join(DCOMINfnmoc,
diff --git a/ush/global_ens/evs_process_atmos_ecme.sh b/ush/global_ens/evs_process_atmos_ecme.sh
index affb5468b..f3edb6014 100755
--- a/ush/global_ens/evs_process_atmos_ecme.sh
+++ b/ush/global_ens/evs_process_atmos_ecme.sh
@@ -91,7 +91,7 @@ while [ ${hourix} -lt 31 ]; do
   vmdh=` echo ${vymdh} | cut -c5-10`
   vhour=`${NHOUR} ${vymdh} ${ymdh}`
   if [ ${hourix} = 0 ] ; then
-    DCD=${DCOMIN}/$yyyymmdd/wgrbbul/ecmwf/DCD${imdh}00${vmdh}001
+    DCD=${DCOMINecmwf}/$yyyymmdd/wgrbbul/ecmwf/DCD${imdh}00${vmdh}00${ECMWF_FILE_EXT:-1}
     if [ -s $DCD ] ; then
       >$WORKtask/ecmanl.t${ihour}z.grid3.f000.grib1
       chmod 640 $WORKtask/ecmanl.t${ihour}z.grid3.f000.grib1
@@ -122,7 +122,7 @@ while [ ${hourix} -lt 31 ]; do
   #*************************************************************
   # Retrieve required fields from ECME member files E1E in DCOM
   #*************************************************************
-  E1E=${DCOMIN}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}001
+  E1E=${DCOMINecmwf}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}00${ECMWF_FILE_EXT:-1}
   if [ ! -s $E1E ]; then
     echo "WARNING: $E1E is not available"
     if [ $SENDMAIL = YES ]; then
@@ -172,7 +172,7 @@ while [ ${hourix} -lt 31 ]; do
   vymdh=`${NDATE} ${hourinc} ${ymdh}`
   vmdh=` echo ${vymdh} | cut -c5-10`
   vhour=`${NHOUR} ${vymdh} ${ymdh}`
-  E1E=${DCOMIN}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}001
+  E1E=${DCOMINecmwf}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}00${ECMWF_FILE_EXT:-1}
   if [ -s $E1E ]; then
     >E1E_apcp.${hourinc}
     chmod 640 E1E_apcp.${hourinc}
@@ -241,7 +241,7 @@ while [ ${hourix} -lt 31 ]; do
   vymdh=`${NDATE} ${hourinc} ${ymdh}`
   vmdh=` echo ${vymdh} | cut -c5-10`
   vhour=`${NHOUR} ${vymdh} ${ymdh}`
-  E1E=${DCOMIN}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}001
+  E1E=${DCOMINecmwf}/$yyyymmdd/wgrbbul/ecmwf/E1E${imdh}00${vmdh}00${ECMWF_FILE_EXT:-1}
   if [ -s $E1E ]; then
     >E1E_vertical.${hourinc}
     chmod 640 E1E_vertical.${hourinc}
diff --git a/ush/subseasonal/subseasonal_prep_obs.py b/ush/subseasonal/subseasonal_prep_obs.py
index efcd28aad..f8e785b77 100644
--- a/ush/subseasonal/subseasonal_prep_obs.py
+++ b/ush/subseasonal/subseasonal_prep_obs.py
@@ -36,6 +36,7 @@
 COMPONENT = os.environ['COMPONENT']
 STEP = os.environ['STEP']
 OBSNAME = os.environ['OBSNAME'].split(' ')
+ECMWF_FILE_EXT = os.environ.get('ECMWF_FILE_EXT', '1')
 
 # Make COMOUT directory for dates
 COMOUT_INITDATE = COMOUT+'.'+INITDATE
@@ -63,7 +64,7 @@
                                                'wgrbbul',
                                                'ecmwf',
                                                'DCD{init?fmt=%m%d%H}00'
-                                               +'{init?fmt=%m%d%H}001'),
+                                               +'{init?fmt=%m%d%H}00'+f'{ECMWF_FILE_EXT}'),
                       'arch_file_format': os.path.join(COMOUT_INITDATE,                                                              'ecmwf',
                                                        'ecmwf.'
                                                        +'{init?fmt=%Y%m%d%H}'