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NOUS72 KNES 292120
ADMNES
UPDATE #1: PDA OPS SUBSCRIPTION FOR ALL S-NPP OMPS LIMB PROFILE (LP)
PRODUCTS INCLUDING BLENDED LTOAST PRODUCTS WILL BE DISABLED AT 21:00 UTC ON
MAY 29TH, 2024.


USERS ARE ADVISED THAT THESE S-NPP LIMB PRODUCTS HAVE BEEN DEGRADED SINCE
MAY 25TH, 2024.


AS S-NPP HIGH RATE DATA (HRD) REMAINS ENABLED FOR OMPS LP PRODUCTS, DIRECT
BROADCAST (DB) USERS ARE ADVISED THAT THIS S-NPP OMPS LP SCIENCE DATA IS
NOT YET CLEARED FOR OPERATIONAL USE.



TOPIC: GPS INVALID ON S-NPP SPACECRAFT

DATE/TIME ISSUED: MAY 29, 2024  2108Z



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

THIS MESSAGE WAS SENT BY ESPC.NOTIFICATION@NOAA.GOV. YOU HAVE BEEN SENT
THIS AND OTHER NOTIFICATIONS BECAUSE YOU HAVE OPTED IN TO RECEIVE IT. IF
FOR ANY REASON, YOU WISH TO UNSUBSCRIBE, PLEASE CONTACT ESPC HELP DESK AT
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