Per NOAA Workplace of Satellite tv for pc and Product Operations (OSPO), the final requirement was fulfilled to declare NOAA-21 operational and because the secondary satellite tv for pc of the JPSS constellation. As of three November 2023, the three present JPSS satellites at the moment are designated within the following order: Main – NOAA-20, Secondary – NOAA-21, and Tertiary – SNPP. This transformation shouldn’t impact the information distribution, nevertheless, the three JPSS satellites are operated within the new prioritized order. As an illustration, the first and secondary satellites (on this case, NOAA-20 and NOAA-21) take precedence in information processing and spacecraft maneuvers.
Within the incoming months, as soon as the vast majority of NOAA-21 datasets attain provisional maturity or higher, the NOAA-21 satellite tv for pc will probably be assigned as the first satellite tv for pc. NOAA-20 will then turn out to be the secondary satellite tv for pc, and SNPP, the tertiary satellite tv for pc. With respect to SNPP, the tertiary designation signifies that any non-nominal difficulty or floor useful resource constraint will probably be addressed beneath a best-effort foundation, except a satellite tv for pc or instrument well being and security difficulty happens.
The present and future JPSS satellite tv for pc designations and orbital configurations will be seen within the picture under. Consult with the present section highlighted within the inexperienced field, and the final section positioned to the best, titled, ‘After Early 2024’. Picture credit score, because of TOWR-S/NOAA.
We sit up for NOAA-21 turning into the first satellite tv for pc within the JPSS constellation in 2024, together with the up to date JPSS orbital configuration. As soon as NOAA-21 turns into the first satellite tv for pc, NOAA-20 and NOAA-21 will probably be separated by a 1/2 orbit (~50-min aside), with SNPP positioned 1/4 orbit between the 2.
Sources: NOAA OSPO – N21 Secondary Satellite tv for pc in Constellation Declaration, NOAA NESDIS – N21 is Operational, and NOAA/NWS/TOWR-S.