General handling of GMAO-preqc files (#358)

* General handle for GMAO-preqc bfr files

* fix typo

* explain

CHANGELOG.md

@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Updated observation resource files for M21C
+- Generalize handling of obsys.rc for reanalysis when prebufr files are created
+  within the DAS by preQC
 
 ## [v1.7.2+R21C_v1.0.0] - 2024-03-01
 

GMAO_etc/obsys-nccs-r21c.rc

@@ -488,11 +488,11 @@ BEGIN r21c_gmi_bufr => gmi.%y4%m2%d2.t%h2z.bufr
 END
 
 #-------------------------
-BEGIN gmao_prep_bufr => EXPID.prepbufr.%y4%m2%d2.t%h2z.blk
- 19961231_00z-20211231_18z 060000 FVHOME/EXPID/atmens/central/EXPID.prepbufr.%y4%m2%d2.t%h2z.blk
+BEGIN gmao_prep_bufr => $EXPID.prepbufr.%y4%m2%d2.t%h2z.bfr
+ 19961231_00z-20211231_18z 060000 $FVHOME/atmens/central/$EXPID.prepbufr.%y4%m2%d2.t%h2z.blk
 END
-BEGIN gmao_acftpfl_bufr => EXPID.acft_profl.%y4%m2%d2.t%h2z.bfr
- 19961231_00z-20211231_18z 060000 FVHOME/EXPID/atmens/central/EXPID.acft_profl.%y4%m2%d2.t%h2z.bfr
+BEGIN gmao_acftpfl_bufr => $EXPID.acft_profl.%y4%m2%d2.t%h2z.bfr
+ 19961231_00z-20211231_18z 060000 $FVHOME/atmens/central/$EXPID.acft_profl.%y4%m2%d2.t%h2z.bfr
 END