diff --git a/parm/config/config.base.emc.dyn b/parm/config/config.base.emc.dyn
index 66bab5904b..d3ec76a7e4 100755
--- a/parm/config/config.base.emc.dyn
+++ b/parm/config/config.base.emc.dyn
@@ -68,7 +68,7 @@ export HOMEgsi="$HOMEgfs"
 export FIXgsi="$HOMEgfs/fix/fix_gsi"
 export HOMEfv3gfs="$HOMEgfs/sorc/fv3gfs.fd"
 export HOMEpost="$HOMEgfs"
-export HOMEobsproc_prep="$BASE_GIT/obsproc/gfsv16b/obsproc_prep.iss70457.netcdfhistory"
+export HOMEobsproc_prep="$BASE_GIT/obsproc/gfsv16b/obsproc_prep.iss70457.netcdfhistory_atmos"
 export HOMEobsproc_network="$BASE_GIT/obsproc/gfsv16b/obsproc_global.iss71402.supportGFSv16"
 export HOMEobsproc_global=$HOMEobsproc_network
 export BASE_VERIF="$BASE_SVN/verif/global/tags/vsdb"