ACGS
CAPI
ESA Data Ontology
TanSat
Chinese Carbon Dioxide Observation Satellite
Earth Observation Satellite
The first Chinese Carbon Dioxide Observation Satellite Mission (TanSat) was launched on December 21, 2016. It carries two instruments on-board: the Atmospheric Carbon-dioxide Grating Spectrometer (ACGS) and the multiple-band Cloud and Aerosol Polarization Imager (CAPI). TanSat flies in a sun-synchronous low Earth orbit (LEO) with an equator crossing time around 13:30 local time. The satellite operates in three measurement modes: nadir (ND), glint (GL) and target (TG). The swath width of TanSat measurements is ~18 km across the satellite track and contains 9 footprints each with a size of 2 km × 2 km in nadir. Nadir and glint mode alternate orbit-by-orbit, and the TanSat nadir model ground track is typically between two OCO-2 tracks, which provides potential future opportunities for combined usage of both data products for increased spatial coverage.