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Mission(s)InstrumentAgencyStatusLaunch date End of life dateSwath width (km)Spatial Resolution (m)Revisit (days)AccuracyOrbit typeMission typeData AccessGST1 (2023)GST2 (2028)GST3 (2033)CO2CH4
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AIRMO ConstellationAIRMO SpectrometerAIRMOPlanned≥ 2024202950LEO (SSO)Point SourceCommercialNoYesNo
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AquaAIRSNASAOperational (extended)04 May 200220261650130016Humidity: 20%, Temperature: 1 KLEO (SSO)SoundersFree/Open/EasyYesMaybeNo
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AuroraHIOrbital SidekickOperational (nominal)30 Jun 202120268LEO (SSO)Point SourceCommercialYesNoNo
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Brightskies SSISISpacePlanned≥ 202420291004Minimum threshold required for detection: 100kg/hLEO (SSO)Point SourceCommercialNoYesNo
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Carbon MapperHISCarbon MapperPlanned≥ 2024202918307SNR@CH4 detection band (medium bright scene) : 300-600. CH4 Minimum Detection Detection Limit : 50-150 kg/hr, CO2 Minimum Detection Limit : 200,000-600,000 kg/hrLEO (SSO)Point SourceFree/Open/EasyNoYesMaybe
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CO2ImageCOSISDLRPlanned202620295050Temperature profiles: to 0.9 K, Moisture profiles: 20 - 35%, Pressure profiles: 1%LEO (SSO)Point SourceFree/Open/EasyNoYesNo
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CO2MCO2IESAPlanned20272037250200011CO2 precision=0,7ppm, CH4 precision=10 ppb, NO2 precision 1.5 10e15 molec/cm2LEO (SSO)Wide Area MapperFree/Open/EasyNoYesYes
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EMITEMITNASAOperational (extended)14 Jul 202220318060110% radiometric, 10% spectral, 10% spatial, 10% uniformityISSPoint SourceFree/Open/EasyYesYesNo
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EnMAPHSIDLROperational (nominal)01 Apr 20222026303021Radiometric: <5%LEO (SSO)Point SourceFree/Open/EasyYesNoNo
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FengYun-3DGASNRSCCOperational (extended)15 Nov 2017≥ 202410030006LEO (SSO)Wide Area MapperConstrained/LimitedYesNoNo
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FengYun-3HGASNRSCCPlanned≥ 2024202910030006LEO (SSO)Wide Area MapperConstrained/LimitedNoYesYes
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Gaofen-5GMICNSAOperational (nominal)08 May 2018202610.3105002Radiation calibration: 5% (relative,~2%)LEO (SSO)Wide Area MapperConstrained/LimitedYesMaybeNo
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GEI-SAT ConstellationiSIM-170SATLANTISPlanned20252030140.8LEO (SSO)Point SourceCommercialNoYesNo
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GEI-SAT PrecursoriSIM-90SATLANTISOperational (nominal)12 Jun 20232028141.56LEO (SSO)Point SourceCommercialNoYesNo
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GHGSat-CWAF-PGHGSatOperational (nominal)02 Sep 20202028202514LEO (SSO)Point SourceConstrained/LimitedYesYesNo
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GHGSat-DWAF-P (Demo)GHGSatMission Complete22 Jun 2016June 22, 2020155014Methane column density precision (% of background) : 13%. Detection Threshold : 1000 kg/hour in 3 m/s wind (for methane). Depth of imaging : 12 bit. Geometric accuracies : <5 mLEO (SSO)Point SourceConstrained/LimitedYesNoNo
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GHOSt ConstellationHIOrbital SidekickOperational (nominal)15 Apr 2023202781LEO (SSO)Point SourceCommercialYesMaybeNo
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GOSATTANSO-FTSJAXAOperational (extended)23 Jan 2009≥ 20251000105003LEO (SSO)Wide Area MapperFree/Open/EasyYesNoNo
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GOSAT-2TANSO-FTS-2JAXAOperational (extended)29 Oct 2018≥ 2025100097006LEO (SSO)Wide Area MapperFree/Open/EasyYesMaybeNo
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GOSAT-GWTANSO-3JAXAPlanned2025203291110003LEO (SSO)Wide Area MapperFree/Open/EasyNoYesYes
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MERLINIPDA LIDARCNES/DLRPlanned202820310.1515028<2%LEO (SSO)Wide Area MapperFree/Open/EasyNoYesNo
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MethaneSATMethaneSat InstrumentEDFCommissioning04 Mar 2024202626010007Detection Threshold : 2ppbLEO (SSO)Point SourceFree/Open/EasyNoYesNo
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MetOp-BIASIEUMETSATOperational (nominal)17 Sep 2012≥ 202420522500029Temperature: 0.5 - 2 K, specific humidity: 0.1 - 0.3 g/kg, ozone, trace gas profile: 10%LEO (SSO)SoundersFree/Open/EasyYesMaybeNo
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MetOp-CIASIEUMETSATOperational (extended)07 Nov 2018202720522500029Temperature: 0.5 - 2 K, specific humidity: 0.1 - 0.3 g/kg, ozone, trace gas profile: 10%LEO (SSO)SoundersFree/Open/EasyYesYesNo
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MetOp-SGIASI-NGEUMETSATPlannedMar 2025204720002500029LEO (SSO)SoundersFree/Open/EasyNoYesYes
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MicroCARBMicrocarb CNESPlanned2025202713450021CO2 concentrations: bias < 0,1 ppm (objective),  < 0.2 ppm (threshold) , random< 0.5 ppm (objective), 1.5 ppm (threshold) (values extracted from the mission specification)LEO (SSO)Wide Area MapperFree/Open/EasyNoYesNo
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OCO-2Spectrometer (OCO-2)NASAOperational (extended)02 Jul 2014202610225016Provide the data needed to yield single sounding estimates of XCO2 with one sigma errors of <= 2 ppmLEO (SSO)Wide Area MapperFree/Open/EasyYesNoNo
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OCO-3Spectrometer (OCO-3)NASAOperational (nominal)04 May 20192031422501Provide single sounding estimates of XCO2 with one sigma errors of <= 2 ppmISSWide Area MapperFree/Open/EasyYesYesNo
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PRISMAHYCASIOperational (extended)22 Mar 2019≥ 2024303029Spectral resolution 10 nmLEO (SSO)Point SourceConstrained/LimitedYesNoNo
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ScepterSatScepterSat InstrumentScepterPlanned≥ 20242028LEO (SSO)Point Source​NoYesNo
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SciSat-1ACE-FTSCSAOperational (extended)12 Aug 200320263000365Depends on species, meets requirements for climate variablesLEO non-SSOSoundersFree/Open/EasyYesMaybeNo
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Sentinel-5A&BUVNS (S5A)ESAPlanned20252039367075001LEO (SSO)Wide Area MapperFree/Open/EasyNoYesYes
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Sentinel-5PUVNS (S5P)ESAOperational (nominal)13 Oct 201720272600700017LEO (SSO)Wide Area MapperFree/Open/EasyYesMaybeNo
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Suomi-NPPCrISNASAOperational (extended)28 Oct 2011202622001400016Temperature profiles: to 0.9 K, Moisture profiles: 20 - 35%, Pressure profiles: 1%LEO (SSO)SoundersFree/Open/EasyYesNoNo
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TANGO-CarbonSS-CarbonISISpacePlanned20252028303004​Point SourceConstrained/LimitedNoYesNo
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