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.

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880

Web Site(s) for applicable information: N/A