Correction to Subject Line:  - Product Outage/Anomaly: Correction - Update #1 NOAA-21 CrIs SDR Anomaly – Issued March 04,2025 0123 UTC

Update #1:  The NOAA-21 CrIs SDR data has returned to nominal performance since 0635 UTC, March 03, 2025. Actions are currently underway to mitigate the risk of similar anomalies in the future.

 

 Topic: NOAA-21 CrIS SDR Anomaly

 

Date/Time Issued: March 04, 2025 0131 UTC

 

Product(s) or Data Impacted:  NOAA-21 CrIS SDR and derived products

 

Date/Time of Initial Impact: March 2, 2025, 1800 UTC

 

Date/Time of Expected End: TBD

 

Length of Outage: TBD

 

Details/Specifics of Change: NOAA-21 CrIS laser wavelength direct readout from the SDR products has been set at as the predefined filled value (670nm, 1550 nm, 2320 nm) since around 18:00 UTC of 2025-03-02, resulting in large bias of radiance produces of all three bands.  However, the laser wavelength directly calculated from the RDRengineering packet is nominal.

The Cal/val team is investigating the root cause of the issue.

 

Contact Information: For information on the status of this work, please contact the individual PAL or ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

 

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

 

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