Observing Systems Capability Analysis and Review Tool
Satellite Programme: Constellation Observing System for Meteorology, Ionosphere & Climate
Series of satellite constellations (6 satellites each) for radio occultation sounding.
Joint Taiwan-USA programme: the Taiwan NSPO responsible of development, system integration and operations; the US UCAR providing the platform, the payload and the launch; NOAA responsible of bridging with the meteorological community.
The platforms are actively stabilised over 3 axes.
The design life time is 5 years for individual satellites, 7 years until some satellite of the constellation survives.
The replacement policy is based on launching a new constellation before the status of the previous is unacceptably degraded.
The 6 satellites are launched at once in the same drifting orbit, then dephased by about 30° during a time interval over one year long.
See detailed description at
Data are stored onboard and downlinked to stations in Fairbanks, Kiruna, Tromsø, Taiwan and other ones.
Acquisition, processing and archiving at the UCAR CDAAC (COSMIC Data Analysis and Archive Center) and the NSPO TACC (Taiwan Analysis Center for COSMIC).
Data input into the meteorological Global Telecommunication System by NOAA.
Associated satellites and instruments
Note: red tag => no longer operational , green tag => operational , blue tag => planned
Constellation Observing System for Meteorology, Ionosphere & Climate
(2006 - 2018)
(2018-10 - 2025)
(TBD - TBD)