Topic:  NOAA-21 Operational Declaration 

Date/Time Issued:  April 3, 2023 1614 UTC

Product(s) or Data Impacted: N/A

Date/Time of Initial Impact: March 30, 2023 2200 UTC

Date/Time of Expected End:  N/A

Length of Outage:  N/A

Details/Specifics of Change: 

Upon a successful Post-Launch Assessment Review (PLAR) and Handover Readiness Review (HRR), OSPO has assumed responsibility for NOAA-21 mission operations in the 1325 Local Time of Ascending Node (LTAN) (PM) ascending orbit . The calibration and validation (cal/val) activities on NOAA-21 are still ongoing, but satellite command and control is under OSPO operations to include spacecraft anomalies and conjunction avoidance maneuvers. At this point, the JPSS satellite priority assignments are:

●       Primary: NOAA-20

●       Secondary: S-NPP

●       Tertiary: NOAA-21

When NOAA’s National Weather Service (NWS) confirms that it is ready to assimilate the NOAA-21 sounder data (ATMS and CrIS) in its modeling system and the performance of the VIIRS Imagery product is acceptable, then NOAA-21 will be declared as the secondary and the JPSS satellites assignments will be:

●       Primary: NOAA-20

●       Secondary: NOAA-21

●       Tertiary: S-NPP

When majority of NOAA-21 products reach provisional maturity, then NOAA-21 will be designated the primary satellite and the JPSS satellite assignments will be: 

●       Primary: NOAA-21

●       Secondary: NOAA-20

●       Tertiary: S-NPP

Other messages to the community will be sent regarding NOAA-21 operational product availability as those product provisional milestones occur.

Please reference the JPSS-2/NOAA-21 Product Operations Plan (POP) for details at: https://noaasis.noaa.gov/POLAR/JPSS/jpss.html

The contents of this release are subject to change based on user readiness, customer feedback, and management approval. Additional ESPC notifications may provide further details and updates concerning this release.  

Any user feedback and questions should be sent to Shuang Qiu at shuang.qiu@noaa.gov

Contact Information for Further Information: ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880, and User Services at SPSD.Userservices@noaa.gov 

Web Site(s) for applicable information: https://noaasis.noaa.gov/POLAR/JPSS/jpss.html

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