Topic: NOAA Operational Implementation of the CrIS Polarization Correction on January 29, 2020
Date/Time Issued: January 14, 2020 1615 UTC
Product(s) or Data Impacted: CrIS SDR BUFR products
PDA short names for the datasets are as follows:
CrIS_C22111_BUFR
CrIS_C0431_BUFR
Satellite(s) Involved: S-NPP and NOAA-20
Instrument (s) Involved: Cross-track Infrared Sounder
Date/Time of Initial Impact: January 29, 2020 1200 UTC
Impacts on Users and Significance: The CrIS polarization correction is small with the largest impact on cold brightness temperatures at short wavelengths. The impact on average could be ~0.05 K, ~0.1 K, and ~0.2 K for CrIS three bands, Longwave, Midwave, and Shortwave respectively.
Date/Time of Expected End: N/A
Length of Outage: N/A
Details/Specifics of Change: The CrIS polarization correction will be implemented as a part of IDPS Block 2.1 maintenance release Mx8 on January 29, 2020. This will have a small change for cold brightness temperatures at short wavelengths.