Update #2: This is a reminder for the operational implementation of the CrIS Polarization Correction on January 29, 2020. Please note the initial impact is now 1500 UTC.
Update #1: Please see the updated list of products impacted from the Implementation of CrIS Polarization Correction.
Topic:M-B Operational Implementation of the CrIS Polarization Correction on January 29, 2020
Date/Time Issued:M-B M-BJanuary 29, 2020 1720 UTC
Product(s) or Data Impacted:M-B CrIS SDR BUFR products
PDA short names for the datasets are as follows:
CrIS_C1305_BUFR (S-NPP only)
CrIS_C0399_BUFR (S-NPP only)
Satellite(s) Involved:M-B M-BS-NPP and NOAA-20
Instrument (s) Involved: M-BCross-track Infrared Sounder
Date/Time of Initial Impact: January 29, 2020 1500 UTC
Impacts on Users and Significance:M-B 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:M-B N/A
Length of Outage: M-BN/A
Details/Specifics of Change:M-B 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.
Contact Information for Further Information: Awdhesh Sharma at firstname.lastname@example.org and 301-683-3229,ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880, and User Services at SPSD.Userservices@noaa.govM-B
Web Site(s) for applicable information:
As part of the Scientific Evaluation of the Polarization Correction Activities, 3-months of SNPP and NOAA-20 CrIS SDR data in BUFR format was generated. The data is available at:
PLoff = CrIS Polarization Correction Off.
PLon = CrIS Polarization Correction On.
The period of the data is from 2018-305 to 2019-030.