Topic:  SNPP CrIS Scan Mirror Baffle Temperature Anomaly


Date/Time Issued: May 19, 2023 1530 UTC


Product(s) or Data Impacted:  SNPP CrIS SDR products


Date/Time of Initial Impact:  May 18 14:04 UTC


Date/Time of Expected End: TBD 


Duration: TBD


Details:  On May 18, 2023, around 14:04:47 UTC SNPP CrIS experienced a sudden drop in the scan baffle temperature reading. The baffle temperature telemetry value is used in the CrIS radiometric calibration. Science team is working on the impact assessment of the anomaly on the CrIS radiance data quality. Potential solutions are being tested to reduce the impact on the internal calibration target (ICT) radiance used in the calibration of the SNPP observations.

Please use SNPP CrIS Sensor Data Record products with caution until the ongoing investigation is complete and an update can be provided. 

Contact Information: For information on the status of this work, please contact Shuang Qiu (Shuang or ESPC Operations at or 301-817-3880

This message was sent to You have been sent this and other notifications because you have opted in to receive it. If you wish to unsubscribe please contact the ESPC Help Desk at or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request.