Full Name Greenhouse Gas Satellite - C7 (Gaspard) Status Operational (nominal)
Mission Agencies GHGSat Launch Date 15 Apr 2023
Mission Links EOL Date Dec 2027
EO Portal Info NORAD Catalog # 56209 (TLE)
International Designator 2023-054AH
Orbit Type TBD Orbit Period 95 minutes
Orbit Sense TBD Orbit Inclination 14 deg
Orbit Altitude 496 km Orbit Longitude
Orbit LST Repeat Cycle 14 days
Objectives and Applications Detect and measure the specific ‘signature’ of methane in the atmosphere.
Mission Measurements
AtmosphereCloud type, amount and cloud top temperature C&A
Trace gases (excluding ozone) WAF-P (CH4 only)
Mission Instruments
C&A - Cloud and Aerosol Sensor
WAF-P (CH4 only) - Wide-Angle Fabry-Perot Imaging Spectrometer (CH4 only)
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GHGSat Archive and Tasking

The GHGSat constellation aims to become the global reference for the remote sensing of greenhouse gas (GHG) emissions from any source in the world. The GHGSat constellation currently consists of GHGSat-D (Claire), GHGSat-C1 (Iris) and GHGSat-C2 (Hugo). Additional launches are foreseen over the coming years in order to achieve a 10 satellite constellation. The on-board spectrometer allows measurement of the vertical column abundances of greenhouse gases, especially methane. ESA offers access to worldwide GHGSat data (both archived and new acquisitions) via the TPM scheme. Read more

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