Topic: GPS invalid on S-NPP spacecraft 


Date/Time Issued: May 28, 2024  1649Z

 

Product(s) or Data Impacted: All S-NPP VIIRS Data Products

 

Date/Time of Initial Impact: May 25, 2024 22:30 UTC


Date/Time of expected end Time:   TBD


Duration: TBD


Details: Starting on May 25 at ~22:30 UTC, the GPS on the S-NPP spacecraft toggled to invalid causing the geolocation of all observed data to be inaccurate and out of the mission specifications. Engineering has started planning the execution of the reset of the GPS unit on the S-NPP spacecraft. The anticipated reset of the GPS unit is expected no earlier than May 29, 2024. All PDA OPS subscriptions for all S-NPP VIIRS science products will be disabled at 17:00 UTC on May 28, 2024. 


As S-NPP High Rate data (HRD) remains enabled for all VIIRS products, Direct Broadcast (DB) users are advised that this S-NPP VIIRS science data is not yet cleared for operational use.


The NOAA-21 and NOAA-20 satellites will continue to provide JPSS VIIRS science data as the primary and secondary satellites, respectively.



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

 

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

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