NPP CRIS Data Anomaly

Cross-track Infrared Sounder Sensor Data Record

NPP CRIS Data Anomaly

Postby kathys » Mon May 24, 2021 1:57 pm

From: Trusted NESDIS NSOF Sender

Date:
May 21, 2021 at 6:56:44 PM CDT

Subject: Product Outage/Anomaly: (Update #2) NPP SMD CRIS Data Outage/Delay Issued May 21, 2021 2356Z


Update #2: Initial efforts to troubleshoot the Long Wave segment of the S-NPP CrIS instrument have not been successful. Due to this state, CrIS-SCIENCE-SDR for S-NPP will be unavailable indefinitely until a path forward has been discussed with the right parties. The prime CrIS instrument on the NOAA-20 spacecraft will continue to provide all CrIS data needs.

Update #1:
The initial impact time for CRIS Instrument anomaly is1542z. The CRIS anomaly is still ongoing and being investigated.

Topic: NPP SMD CRIS data outage/delay

Date/Time Issued: May 21, 2021 2356Z

Product(s) or Data Impacted: All NPP CRIS products

Date/Time of Initial Impact: May 21, 2021 1552Z

Date/Time of Expected End: TBD

Length of Outage:
TBD
kathys
 
Posts: 345
Joined: Tue Jun 22, 2010 4:51 pm

CrIS Anomaly: Update #6

Postby kathys » Wed May 26, 2021 11:27 am

Latest Information from NOAA:

Update #6: On May 25, 2021 an attempt was made to recover the CrIS Long Wave (LW) Signal Processor (SP) on SNPP, but that recovery procedure was unsuccessful. OSPO Flight Engineers and the CrIS instrument vendor will continue to work on alternative viable recovery efforts as well as root cause analysis for the current Side 2 failure for the next week(s). The SNPP CrIS instrument is now in an operational state on Side 2; however, the CrIS instrument is only generating Mid Wavelength Infrared (MWIR) and Short Wavelength Infrared (SWIR) Level 0 data - higher level CrIS data will be enabled shortly after modifications are implemented to SDR processing. Please see additional information in Details/Specifics of Change below. As new updates are available regarding SNPP CrIS, that information will be shared with the user community.

Update #5: Due to this state, CrIS-SCIENCE-SDR for S-NPP will be unavailable indefinitely until a path forward has been discussed with the right parties. The prime CrIS instrument on the NOAA-20 spacecraft will continue to provide all CrIS data needs.

Update #4: Due to this state, CrIS-SCIENCE-SDR for S-NPP will be unavailable indefinitely until a path forward has been discussed with the right parties. The prime CrIS instrument on the NOAA-20 spacecraft will continue to provide all CrIS data needs.

Update #3: The state, CrIS-SCIENCE-SDR for S-NPP will be unavailable indefinitely until a path forward has been discussed with the right parties. The prime CrIS instrument on the NOAA-20 spacecraft will continue to provide all CrIS data needs.

Update #2: Initial efforts to troubleshoot the Long Wave segment of the S-NPP CrIS instrument have not been successful. Due to this state, CrIS-SCIENCE-SDR for S-NPP will be unavailable indefinitely until a path forward has been discussed with the right parties. The prime CrIS instrument on the NOAA-20 spacecraft will continue to provide all CrIS data needs.

Update #1: The initial impact time for CRIS Instrument anomaly is1542z. The CRIS anomaly is still ongoing and being investigated.

Topic: NPP SMD CRIS data outage/delay
Date/Time Issued: May 26, 2021 1340 UTC
Product(s) or Data Impacted: All NPP CRIS products
Date/Time of Initial Impact: May 21, 2021 1552Z
Date/Time of Expected End: TBD
Length of Outage: TBD

Details/Specifics of Change: During Fairbanks contact 49561 (AOS 1552Z). CRIS instrument compromised aboard spacecraft probable data processing issues. The CrIS Sensor Data Records (SDR) processing software has been reconfigured in order to create the SDR without the Longwave Wavelength InfraRed (LW) data and SDR distribution is expected by the end of this week. The CrIS SDR is an input to the SNPP NOAA Unique Combined Atmospheric Processing System (NUCAPS)/Hyper-Spectral Enterprise Algorithm Package (HEAP) Environmental Data Record (EDR), however the EDR requires the CrIS LWIR data so the EDR is not being generated. The engineering and science team, with inputs from mission partners, are considering the feasibility of switching SNPP CrIS from Side 2 electronics to Side 1 electronics. CrIS has two electronic suites: Side 1 and Side 2. SNPP CrIS has been operating on the Side 2 electronics since June 2019, when the MWSP failed. Switching to Side 1 will provide Long Wave (LW) and Short Wavelength InfraRed (SWIR) data. Mission partners have prioritized LW as the highest priority. The switchover could take one to two weeks. The CrIS instrument on the NOAA-20 spacecraft continues to provide CrIS data needs as the primary satellite.
kathys
 
Posts: 345
Joined: Tue Jun 22, 2010 4:51 pm

Re: NPP CRIS Data Anomaly

Postby kathys » Tue Jul 13, 2021 8:54 am

The S-NPP CrIS instrument configuration is being changed to allow for LongWave (LW) observations. The switch to a ShortWave (SW)/LW configuration is scheduled to be completed on 14 July. Once the JPSS Science Team has approved the calibration of the instrument bands, the CSPP Team may need to send a patch or update to the SDR software that will allow S-NPP CrIS SDR processing to resume.

Please let us know if you have any questions or concerns.

---------------------------------------------------------------------------------------------------------------------------------------


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 12, 2021 2135 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.
kathys
 
Posts: 345
Joined: Tue Jun 22, 2010 4:51 pm

Re: NPP CRIS Data Anomaly

Postby kathys » Fri Jul 23, 2021 1:23 pm

NOAA has declared that SNPP CrIS SDR data are ready for operational use in the side-1 electronics configuration where the LW and SW channels are present but the MW channels are missing.

A patch is required for CSPP SDR v3.2 in order to enable SNPP CrIS SDR processing in this configuration.

Please contact us using the following CSPP Issues email form if you would like us to send you instructions for downloading and installing the patch.

http://cimss.ssec.wisc.edu/contact-form ... 0Questions

Kathy
kathys
 
Posts: 345
Joined: Tue Jun 22, 2010 4:51 pm


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