Update #1: These anomalous events have been intermittently observed since 2019.  However, the most recent events have impacted up to 10% of the quality flags of the daily CrIS SDR Data. The science and engineering teams are investigating an optimal solution. Please provide any feedback, including any user impacts, to the JPSS PAL by email at Shuang.Qiu@noaa.gov.

Topic:  NOAA-20 CrIS Scan Baffle Temperature Anomaly

Date/Time Issued: Feb 24, 2022  1520 UTC

Product or Data Impacted: NOAA-20 CrIS Sensor Data Records (SDR) and Outgoing Longwave Radiation (OLR)

Date/Time of Initial Impact: Feb 15, 2022 2010 UTC

Date/Time of Expected End: TBD

Length of the Outage/Event: TBD

Details/Specifics of Change: 

The NOAA-20 CrIS sensor is experiencing an anomaly that flags the valid data as degraded data due to the failure of a temperature sensor. The issue is caused by an intermittent electrical failure. Due to this anomaly, the Quality Flags (QFs) included in the SDR BUFR data and OLR quality flags should be ignored. Troubleshooting of the problem has been initiated. A short-term solution proposed by the SDR Science Team to fix this problem is to update the engineering packet to open the limits and prevent the flag from being set. Users will be notified when this fix will be implemented via ESPC operation.

Please provide your feedback to Sounding Product Area Lead (PAL) awdhesh.sharma@noaa.gov and JPSS PAL Shuang.Qiu@noaa.gov

Web Site(s) for applicable information: https://www.ospo.noaa.gov/Products/atmosphere/soundings/nucaps/other_parameters-new.html

Contact information for further information: ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880

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