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The main objective of the TanSat mission is to retrieve the atmosphere column-averaged CO2 dry air mole fraction with precisions of 1% (4 ppm) on national and global scales. The scientific goal of the project is to improve the understanding on the global CO2 distribution and its contribution to the climate change, and also to monitor the CO2 variation on seasonal time scales.

On board the satellite are two instruments developed at CIOMP/CAS (Changchun Institute of Optics, Fine Mechanics and Physics/Chinese Academy of Sciences), in Changchun, China.

The instruments are the CarbonSpec, a high-resolution Carbon Dioxide Spectrometer for measuring the near-infrared absorption by CO2; and the CAPI (Cloud and Aerosol Polarimetry Imager) to compensate the CO2 measurement errors by high-resolution measurement of cloud and aerosol.

Alternate Names

  • 41898

Facts in Brief

Launch Date: 2016-12-21
Launch Vehicle: Long March 2D
Launch Site: Jiuquan, Peoples Republic of China

Funding Agency

  • Chinese Academy of Sciences (Peoples Republic of China)


  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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