Status for SNPP/CrIS
LIkun Wang - NOAA Affliate
Hi Dear CrIS data users:
I tried to invite Dave to brief the status of SNPP/CrIS. However, he is taking the vacation during that week (July 8). Attached below please find his INFORMAL summary on the SNPP/CrIS status, if you are SNPP/CrIS data users.
-------- Forwarded Message --------
| Subject: | Re: GSICS web meeting on July 8 |
|---|---|
| Date: | Mon, 28 Jun 2021 12:37:18 +0000 |
| From: | David Tobin <dave....@ssec.wisc.edu> |
| To: | LIkun Wang - NOAA Affliate <likun...@noaa.gov> |
| CC: | David Tobin <dave....@ssec.wisc.edu> |
Hi Likun -
I’m currently planning on being on vacation that week.
The basic story is:
- LW band signal processor died on SNPP Side 2. Cause is very likely radiation over-exposure. (J1 onward uses different FPGAs from SNPP and expected to not have this problem)
- Power cycle and other attempts to restore MW band were unsuccessful. Current performance now with MW and SW on Side2 is nominal.
- Scheduled date for switch to Side 1 for LW coverage (needed for NWP) is July 12-14. If LW is not operational on Side 1 (unlikely), will switch back to Side 2.
Hope you are going good.
Dave
On Jun 22, 2021, at 6:42 AM, LIkun Wang - NOAA Affliate <likun...@noaa.gov> wrote:
Hi Dave:
Good morning. I am now preparing the agenda for the GSICS web meeting on July 8. I am wondering whether you are available to brief what happened for SNPP/CrIS as well as any updates on J2/CrIS. I think there are a lot of CrIS users in the GSICS community. A few slides should be fine.
Thanks,
Likun~
Flavio Iturbide - NOAA Federal
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LIkun Wang - NOAA Affliate
HI Flavio:
Thank you for your interests of briefing the status of SNPP/CrIS.
I put it onto the agenda. Please check the previous email on
meeting information. By the way, there are monthly meetings
planned for the GSICS IR group (usually Thursday morning of the
first week of each month). Should you and your group members have
anything to present, please fell free to let me know. I usually
send the email to call presentations two weeks before the meeting.
Thanks,
Likun~
To view this discussion on the web visit https://groups.google.com/d/msgid/gsics-dev/CAC96hcKw%3DF7Tq%3DDW2PdJXoCg7VkEq%3DpKcNPkCs9X0W%2BVB-Nw_g%40mail.gmail.com.
Manik Bali - NOAA
Update #4: SNPP CrIS SDR products have been declared Provisional following the SDR Science review team approval on July 21, 2021. SNPP CrIS SDR data flow through ESPC will resume on July 22, 2021 at 1400 UTC. The following three IDPS products will resume: CrIS-FS-SDR, CrIS-SDR-GEO, and CRIS-SCIENCE-RDR. Additionally, the following BUFR products will resume: CrIS_C0431_BUFR and CrIS_C2211_BUFR.
Update #3: The SNPP CrIS Side Switch Activities have been successfully completed and the Side-1 LWIR and SWIR bands are functional, while the MWIR band is non-operational. The SNPP CrIS SDR products will be declared Provisional on Wednesday July 21, 2021 following the SDR Science review team approval. EDRs will be available once validated by the science team.
Update #2: Day 2 activities have been completed as planned. Remaining activities are on schedule to be completed on July 14th.
Update #1: Day 1 commanding activities have been completed as planned. The remaining activities are on schedule to be conducted on July 13-14, 2021 as outlined in the original notification.
Topic: CrIS on SNPP switch to side 1 on July 12 2021
Date/Time Issued: July 21, 2021 1900 UTC
Product(s) or Data Impacted: All NPP CrIS products
Date/Time of Initial Impact: July 12, 2021 1107 UTC
Date/Time of Expected End: July 14, 2021 at 1749 UTC (planned)
Length of Outage: ~54 hours (planned)
Details/Specifics of Change:
CrIS on SNPP had an anomaly on May 21, 2021 which resulted in the loss of longwave infrared IR) (LW) channels - only the shortwave (SW) and midwave (MW) CrIS IR spectrum portion has been available since the anomaly occurred. A switch to the Side-1 electronics is scheduled to occur starting on July 12, 2021, since Numerical Weather Prediction (NWP) centers and the NUCAPS/HEAP EDR processing utilize more of the CrIS LW IR spectrum. There is a high probability that both the SWIR and the LWIR bands are functional after switching to Side-1 electronics; however, the MWIR band will not be available, as it failed back in 2019.
OSPO satellite engineering and operations will switch the S-NPP CrIS sensor to the Side-1 electronics beginning on July 12, 2021 at 1107 UTC and completing on July 14, 2021 at 1749 UTC. During that process, no CrIS data from SNPP will be available. After the sensor side switch is completed, Calibration/Validation efforts will be initiated by the NESDIS/STAR CrIS SDR Algorithm Calibration/Validation Science Team to ensure the SNPP CrIS calibrated data is at the highest quality and meets the JPSS maturity levels.
After the side switch occurs, SNPP CrIS data will only be available from CLASS and GRAVITE. These data will be suspended from NDE/PDA until cleared by the calibration/validation science team.
Contact Information for Further Information: ESPC Operations at ESPCOpe...@noaa.gov at 301-817-3880 and SPSD.Use...@noaa.gov
Web Site(s) for applicable information: N/A