CEOS EO HANDBOOK – MISSION SUMMARY - GHGSat-C1 -
Full Name Greenhouse Gas Satellite - C1 (Iris) Status Operational (nominal)
Mission Agencies GHGSat Launch Date 02 Sep 2020
Mission Links mission site | EOL Date Sep 2024
EO Portal Info NORAD Catalog # 46278 (TLE)
International Designator 2020-061G
Orbit Type Sun-synchronous Orbit Period 95 minutes
Orbit Sense Descending Orbit Inclination 97.5 deg
Orbit Altitude 522 km Orbit Longitude
Orbit LST 10:30 Repeat Cycle 14 days
Objectives and Applications Sensing of greenhouse gases (CO2 & CH4) at high resolution. GHGSat'’s unique sensing technology which is able to detect methane emissions from sources 100 times smaller than any other satellite, but with a resolution 100 times higher. That means GHGSat can detect and quantify methane emissions from point sources as small as oil & gas wells. No other commercial operator or state-funded space organization can do this.
Mission Measurements
CategoryParameterInstrument(s)
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
Jan-2020



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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GHGSat archive and tasking

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