add GRACE-FO into convinfo

[XuanliLi-NOAA]

Add GRACE-FO (satellite IDs 803 and 804) to global_convinfo.txt. This change is required with GSI PR 825.

Resolves #27

[XuanliLi-NOAA]

@RussTreadon-NOAA Could you please add @ADCollard and @emilyhcliu as reviewers? Thank you!

[RussTreadon-NOAA]

What is the status of this PR?

[RussTreadon-NOAA]

It seems the comment above was intended for GSI PR #825.

[RussTreadon-NOAA]

A check of the WCOSS2 (Dogwood) GDA shows that gpsro observations from satellite identifier 803 first appears 20211015 00Z

/lfs/h2/emc/dump/noscrub/dump/gdas.20211015/00/atmos/gdas.t00z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       42 reports
/lfs/h2/emc/dump/noscrub/dump/gdas.20211015/06/atmos/gdas.t06z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       32 reports
/lfs/h2/emc/dump/noscrub/dump/gdas.20211015/12/atmos/gdas.t12z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       31 reports
/lfs/h2/emc/dump/noscrub/dump/gdas.20211015/18/atmos/gdas.t18z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       38 reports
/lfs/h2/emc/dump/noscrub/dump/gdas.20211016/00/atmos/gdas.t00z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       37 reports
/lfs/h2/emc/dump/noscrub/dump/gdas.20211016/06/atmos/gdas.t06z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  803 has       41 reports

Satellite identifier 804 first appears 20220107 12Z

temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220107/12/atmos/gdas.t12z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       44 reports
temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220107/18/atmos/gdas.t18z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       43 reports
temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220108/00/atmos/gdas.t00z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       35 reports
temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220108/06/atmos/gdas.t06z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       13 reports
temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220108/12/atmos/gdas.t12z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       39 reports
temp2022:/lfs/h2/emc/dump/noscrub/dump/gdas.20220108/18/atmos/gdas.t18z.status.tm00.bufr_d:         ---> 003.010 (in gpsro ) SAT. ID  804 has       21 reports

The modified global_convinfo.txt in this PR places gpsro data from these two satellite identifiers in assimilate mode (1 usage flag).

May we safely assimilate gpsro data from both identifiers as soon as it appears in the GDA?

We run retrospective parallels over these periods. Attention @CatherineThomas-NOAA

[XuanliLi-NOAA]

It seems the comment above was intended for GSI PR #825.

@RussTreadon-NOAA You are absolutely correct!

[XuanliLi-NOAA]

@RussTreadon-NOAA I think it should be safe for us to assimilate 803 and 804, the data quality looks good. Lidia and I reached out to DWD and DMI, and they confirmed that the GRACE-FO data is processed by GFZ.

Previously, no special QC was applied to GFZ data (such as TerraSAR-X 42 and TanDEM-X 43) in GSI. With the new code change (GSI PR#825), a QFRO quality flag will be applied to them.

[RussTreadon-NOAA]

Thank you @XuanliLi-NOAA for confirming that these data types are safe to assimilate as soon as they appear in GDA.