Topic: Declaring NOAA-21 MIRS Products Operational and SNPP/N20 MIRS products upgrade to v11.9 in NCCF.
Date/Time Issued: July 07, 2023 2021Z
Product(s) or Data Impacted: SNPP/NOAA-20/NOAA-21 MiRS
Date/Time of Initial Impact: July 11, 2023 1700Z
Date/Time of Expected End: July 11, 2023 1800Z
Length of Outage: TBD
Details/Specifics of Change:
The MiRSv11.9 SNPP, NOAA-20, and NOAA-21 will be operational in NCCF and be disseminated to PDA on July 11, 2023.
The original notice about this change/upgrade was sent out in the notice “Declaring VIIRS IceConcentration, IceThickness/Age, SnowCover, VPW and MiRS Products Operational in NCCF” issued on May 24, 2023.
Impact on users: Yes
No PDA shortname change for MIRS SNPP and N20 products
List of Scientific Changes:
1.Updates to the snowfall rate (SFR) algorithm software including (1) Extreme Gradient Boosting (XGB) machine learning Snowfall Detection algorithms for JPSS-2/NOAA-21, NOAA-20, S-NPP, NOAA-19, Metop-C and Metop-B, (2) updated Neural Network machine learning Ice Water Path initialization and SFR bias correction for JPSS-2/NOAA-21, NOAA-20, S-NPP, NOAA-19, Metop-C and Metop-B, (3) new SFR low limit set at 0.05 mm/h and high limit at 6 mm/h, and (4) Metop-A processing removed.
2.Implementation of a new and up to date higher-resolution (0.05 degree lat/lon) land/water surface type database derived from global VIIRS data. The surface type at each satellite observation location also accounts for the satellite field of view (FOV) size. This replaces the previous and out of date 1/6th degree resolution database.
Please note: This upgrade will not be performed during Critical Weather Day (CWD).
Also, the contents of this release are subject to change based on user readiness, customer feedback, and management approval.
Additional ESPC notifications will provide further details and updates concerning this release. User feedback and questions should be directed to Liqun Ma (firstname.lastname@example.org).
Contact Information: For information on the status of this work, please contact Liqun Ma or ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880
Web Site(s) for applicable information: N/A
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