Update# 1: The updated lookup table (DN0 LUT) that fixed the SNPP DNB striping issue was completed at 2000 UTC on January 30, 2020.M-B The additional striping in the NPP products is no longer present after the LUT update.

Topic: Suomi NPP VIIRS DNB Night Time Image Quality not optimal

Date/Time Issued:M-B January 31, 2020 1726 UTC

Product(s) or Data Impacted: Suomi NPP VIIRS DNB Night Time ImageM-B

Date/Time of Initial Impact: January 8, 2020 2022Z

Date/Time of Expected End: January 30, 2020 2000Z

Length of Event:M-B 527 hours

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Details/Specifics of Change:M-B

There has been increased striping for the Suomi NPP VIIRS DNB at high scan angles (beginning and end of the swath) since January 8, 2020 after a flight software update. The VIIRS SDR team is working with JPSS flight to resolve this issue.M-B Further updates will be provided as conditions change.

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This artifact is not related to the recent VIIRS solar vector anomaly which has been resolved on January 17, 2020.

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Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880

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Web Site(s) for applicable information: N/A

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