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GFSv16.1.3 - Emergency change in operations to turn off IASI from metop-a early #446

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KateFriedman-NOAA opened this issue Sep 22, 2021 · 4 comments · Fixed by #449
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GFSv16.1.3 - Emergency change in operations to turn off IASI from metop-a early #446

KateFriedman-NOAA opened this issue Sep 22, 2021 · 4 comments · Fixed by #449
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production update Processing update in production

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@KateFriedman-NOAA
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KateFriedman-NOAA commented Sep 22, 2021 •
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An emergency change was made to the GFS in operations today to turn off the IASI from metop-a earlier than planned. This became GFSv16.1.3 in production. GSI issue NOAA-EMC/GSI#216

From SDM log:

1ap. 1900Z - IDSB Chief Carissa requested an ARFC for the SPA
Team. The metopA "IASI" instrument is failing, so they need to
make a modification to dump jobs so models do not assimilate the
degraded data. They would like to make the change at 12Z
tomorrow. NCO Deputy Director and SDM approved. (MBG)

From @dtkleist email on September 22nd:

Phase one of our emergency fixes are going in this morning. We had to turn off IASI from metop-a earlier than we were
hoping as they have been doing some tests of the instrument as they begin plans for decommissioning the satellite in
the coming months.

Changes to turn off IASI in the GSI global_satinfo.txt file occurred in operations during the 2021092206 gdas cycle. The updated fix file was also copied to the incoming install for what will be v16.1.4 (was v16.1.3 before this change).

The prior release/gfsv16.1.3 branch was copied and made into a new release/gfsv16.1.4 branch for the planned implementation next week (issue #420). Will create a new release/gfsv16.1.3 branch off operations to update the GSI tag that @CatherineThomas-NOAA will create for the emergency change. Will also create a new EMC-v16.1.3 tag for documentation.
@KateFriedman-NOAA KateFriedman-NOAA added production update Processing update in production EMERGENCY labels Sep 22, 2021
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@CatherineThomas-NOAA
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The companion GSI issue on this fix is #216.

KateFriedman-NOAA added a commit that referenced this issue Sep 23, 2021
@KateFriedman-NOAA
Update GSI tag to gfsda.v16.1.3 (turn off IASI early)
d0fc7a1 
- Emergency change occurred in operations during 2021092206 gdas cycle
to turn off the IASI from metop-a earlier than planned
- GSI global_satinfo.txt was updated to turn off IASI
- From SDM log on 20210921: 1ap. 1900Z - IDSB Chief Carissa requested
an ARFC for the SPA Team. The metopA "IASI" instrument is failing,
so they need to make a modification to dump jobs so models do not
assimilate the degraded data. They would like to make the change at
12Z tomorrow. NCO Deputy Director and SDM approved. (MBG)

Refs: #446
@KateFriedman-NOAA
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Test of new release/gfs.v16.1.3 package on WCOSS-Dell reproduces last night's 00z cycle. Will submit PR into operations branch shortly.

@KateFriedman-NOAA KateFriedman-NOAA mentioned this issue Sep 24, 2021
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KateFriedman-NOAA added a commit that referenced this issue Sep 28, 2021
@KateFriedman-NOAA
Update GSI tag to gfsda.v16.1.3 (turn off IASI early) (#449)
31be39d 
- Emergency change occurred in operations during 2021092206 gdas cycle
to turn off the IASI from metop-a earlier than planned
- GSI global_satinfo.txt was updated to turn off IASI
- From SDM log on 20210921: 1ap. 1900Z - IDSB Chief Carissa requested
an ARFC for the SPA Team. The metopA "IASI" instrument is failing,
so they need to make a modification to dump jobs so models do not
assimilate the degraded data. They would like to make the change at
12Z tomorrow. NCO Deputy Director and SDM approved. (MBG)

Refs: #446
@KateFriedman-NOAA KateFriedman-NOAA linked a pull request Sep 28, 2021 that will close this issue
GFSv16.1.3 - Update GSI tag to gfsda.v16.1.3 (turn off IASI early) #449
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@KateFriedman-NOAA
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From September 24th RFC memo:

RFC 8691 - On WCOSS, turned off IASI (Infrared Atmospheric Sounding
Interferometer) on Metop-A in multiple models' ‘satinfo.txt’ files. This was done
because IASI on Metop-A has been significantly degraded since September 17. Since
the instrument is being decommissioned next month, NCO permanently removed this
instrument from assimilation. Implemented on September 22 at 1140Z.

@KateFriedman-NOAA
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New tag and release published: https://github.com/NOAA-EMC/global-workflow/releases/tag/NCO-v16.1.3

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GFSv16.1.3 - Update GSI tag to gfsda.v16.1.3 (turn off IASI early) NOAA-EMC/global-workflow
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