| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| ACE-FTS | Operational | Measure and understand the chemical processes that control the distribution of ozone in the Earth's atmosphere, especially at high altitudes. Monitoring the Canadian Environmental Protection Act (CEPA), the UN Montreal Protocol, and Paris Climate Agreement. Contribute to GoC Methane Pledge | Limb-scanning IR spectrometer |  |
| AHSI | Operational | Greenhouse Gases (CO2, CH4, N2O, etc), Atmospheric Pollutants (NO2, SO2, HCHO, etc) | n/a | |
| AIRS | Operational +/-1.2 % | High spectral resolution measurement of temperature and humidity profiles in the atmosphere. Long-wave Earth surface emissivity. Cloud diagnostics. Trace gas profiles. Surface temperatures. | n/a | |
| EMIT | Operational | Imaging spectroscopy from the visible to short wavelength infrared (VSWIR) to determine surface mineral compostion in the Earth's arid land dust source regions. | High-resolution nadir-scanning SW spectrometer | |
| GAS-2 | Operational | Measurement of CO2, CH4, CO | High-resolution nadir-scanning SW spectrometer | |
| HSI | Operational | Detailed monitoring and characterization of rock and soil targets, vegetation, inland and coastal waters on a global scale. | n/a | |
| HYC | Operational | Hyperspectral data for complex land ecosystem studies. | n/a | |
| IASI | Operational +/-20 % | Measures tropospheric moisture and temperature, column integrated contents of ozone, carbon monoxide, methane, nitrous oxide and other minor gases which affect tropospheric chemistry. Also measures sea surface and land temperature. | n/a | |
| IASI-NG | Operational +/-12 % | Measures profiles of atmospheric temperature, humidity, ozone, carbon monoxide, columns of methane, nitrous oxide, and other minor gases, and sea, ice, and land surface temperature and emissivity. Provides information on aeorols and cloud: fractional coverage, phase, cloud top height (input to Polar AMVs) and particle size. Prime applications: NWP, AC/AQ, climate. Secondary applications: NWC, land/ocean surface monitoring. IASI-NG will resume IASI role as internationl standard for satellite inter-calibration (GSICS). | n/a | |
| IKFS-2 | Operational | Atmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature. | High-resolution nadir-scanning IR spectrometer | |
| iSIM-90 imager | Operational | | n/a | |
| OMI | Operational | Mapping of ozone columns, key air quality components (NO2, SO2, BrO, OClO and aerosols), measurements of cloud pressure and coverage, global distribution and trends in UV-B radiation. | High-resolution nadir-scanning SW spectrometer | |
| SWIR Fizeau interferometer | Operational | SWIR sensor based on a Fizeau interferometer to detect and quantify facility-scale CH4 emissions | High-resolution nadir-scanning SW spectrometer | |
| TANSO-3 | Operational | Global and regional concentration mapping of CO2, CH4, and NO2 for global monitoring of GHG concentrations, verification of emission inventories, and detection of emissions from large sources. | High-resolution nadir-scanning SW spectrometer | |
| TANSO-FTS | Operational +/-0.5 % | CO2 and CH4 distribution. | High-resolution nadir-scanning IR spectrometer | |
| TANSO-FTS-2 | Operational | CO2, CH4, and CO distribution. | High-resolution nadir-scanning IR spectrometer | |
| TROPOMI | Operational | Supporting atmospheric composition and air quality monitoring services. | High-resolution nadir-scanning SW spectrometer | |
| UVSQ-Sat NG Spectrometer | Operational | This NIR Spectrometer fits within a volume of less than 1 unit (10 × 10 × 10 cm) and has a 15 mm aperture. It is composed of a 300 groves/mm grating and an Indium Gallium Arsenide (InGaAs) linear image sensor equipped with a Peltier thermoelectric cooler, offering integration times ranging from 0.5 to 4 s. Improved results (GHG observations) can be achieved if the Uvsq-Sat NG NIR Spectrometer temperature is maintained below −5 °C. | n/a | |
| ACGS-2 | Being developed | CO2 and CH4 monitoring. | n/a | |
| AIRMO Spectrometer | Being developed | Precise and close to real-time data on CH4 and CO2 emissions | n/a | |
| EnSAC | Being developed | Monitoring CH4, NO2, CO2 | n/a | |
| H3Imager | Being developed | Target GHG emission hot spots from localised sources with a 50 km swath and 500 m resolution. | n/a | |
| Hot Spot Tracer | Being developed | Monitoring elements: CO2, CH4, NO2 | n/a | |
| HSI SWIR | Being developed | Cryo-cooled Hyperspectral MCT sensor to detect and quantify facility-scale CH4 emissions | n/a | |
| HYC2 | Being developed | Hyperspectral data for complex land ecosystem studies. | n/a | |
| HYPCAM | Being developed | HYPCAM is a push-broom hyperspectral imaging instrument covering wavelengths from 400 to 2,500 nm with approximately 10 nm spectral sampling. With a target ground sampling distance of 30 m and a swath of about 19 km, it supports agriculture and forestry monitoring, mineral mapping, greenhouse-gas assessment, and environmental monitoring. | n/a | |
| Micro-LiDaR | Being developed | | High-resolution nadir-scanning SW spectrometer | |
| Optical imager (PLATINO-Hyper) | Being developed | Hyperspectral imager developed by ASI. | n/a | |
| SWIR Camera (NarSha) | Being developed | SWIR, with a spectral resolution smaller than 1 nm within the methane absorption band of 1625-1670 nm | High-resolution nadir-scanning IR spectrometer | |
| SWIRSAT Imager | Being developed | High spatial resolution multispectral imagery in the short-wave infrared (SWIR) region for global monitoring of GHG concentrations, specifically CO2 and CH4. | High-resolution nadir-scanning IR spectrometer | |
| Uwhigo | Being developed | Monitor greenhouse gases (GHGs) and nitrogen dioxide | n/a | |
| WildFireSat Sensor | Being developed | Measurements are: Fire Radiative Power (FRP) for hotspot locations. Data products generated: 1) Fire maps showing location, extent, and timing of forest fire events; 2) Fire characteristics, such as fire line intensity and rate of spread; 3) Information enabling air quality modeling of wildland fire events; 4) Mass of carbon released into atmosphere due to biomass burning. | n/a | |
| CO2I | Approved | Pushbroom scanning spectrometer to provide relatively high spatial resolution CO2, CH4 and NO2 observations in support of estimating anthropogenic emissions of CO2 and CH4 in Copernicus. In addition, high quality NO2 and solar-induced fluorescence will be operationally delivered. | High-resolution nadir-scanning SW spectrometer | |
| COSIS | Approved +/-10 | Independent verification of reported emissions of carbon dioxide and methane as a cornerstone toward emission accounting and reduction measures such as agreed on in the Paris climate agreement. | High-resolution nadir-scanning SW spectrometer | |
| IPDA LIDAR | Approved +/-2 % | 'Active' optical remote sensing instrument for atmospheric parameters or trace gases. Global information on atmospheric Methane
concentration (Methane column density
measurements). | n/a | |
| IKFS-3 | Proposed | Atmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature. | High-resolution nadir-scanning IR spectrometer | |
| ScepterSat Instrument | Proposed | | n/a | |
| TGSP | Proposed | Trace gas measurements. | n/a | |
| GAS-1 | No longer operational | Measurement of CO2, CH4, CO, N2O | High-resolution nadir-scanning SW spectrometer | |
| HiRDLS | No longer operational +/-1 % | Measures atmospheric temperature, concentrations of ozone, water vapour, methane, NOx, N2O, CFCs and other minor species, aerosol concentration, location of polar stratospheric clouds and cloud tops. Currently not collecting data on Aqua. | Limb-scanning IR spectrometer | |
| TES | No longer operational +/-0.7 % | 3D profiles on a global scale of all infra-red active species from surface to lower stratosphere. Measures greenhouse gas concentrations, tropospheric ozone, acid rain precursors, gas exchange leading to stratospheric ozone depletion. | High-resolution nadir-scanning IR spectrometer | |