STAR Cal/Val Systems

- GNSS Radio Occultation
- CRTM Coeff Repository
  (NOAA Internal)
- OSE/OSSE repository
  (NOAA Internal)
- NWP GDAS monitoring

Polar-orbiting Satellites

Geostationary Satellites

International Collaboration

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News and Announcements

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On September 30, 2026, the STAR GNSS RO team achieved a major milestone by initiating routine operational testing for COSMIC-2 Space Weather (SWx) Absolute Total Electron Content (aTEC) and Electron Density Profile (EDP) data products. Production is currently running concurrently on-premise and within the NESDIS Common Cloud Framework (NCCF) Science Sandbox.
For NOAA Commercial Data Purchase Delivery Order 6 (DO-6), from September 18, 2026 through December 1, 2026, the number of daily occultations from Spire increased from 3000 to 5800, with enhanced temporal resolution.

For questions and comments, please contact yan.bai@noaa.gov.