| 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. | Limb-scanning IR spectrometer |  |
| AIRS | Operational | 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 | |
| AMI | Operational | Continuous monitoring capability for the near real-time generation of high-resolution meteorological products and long-term change analysis of land/sea surface temperature and cloud coverage. | n/a | |
| ASI | Operational | Atmospheric sounding for weather forecasting. | n/a | |
| EMI-2 | Operational | Ozone profile and total-column or gross profile of other species. Tracked species: BrO, ClO H2O, HCHO, NO, NO2, O3, SO2 and aerosol | n/a | |
| EPIC | Operational | Diurnal measurements of ozone, sulfur dioxide, UV surface radiation, clouds, aerosols and vegetation. | n/a | |
| FCI | Operational | Measurements of cloud cover, cloud top height, precipitation, cloud motion, vegetation, radiation fluxes, convection, air mass analysis, cirrus cloud discrimination, tropopause monitoring, stability monitoring, total ozone and sea surface temperature. | n/a | |
| GEMS | Operational | Measurements of atmospheric chemistry, precursors of aerosols and ozone in particular, in high temporal and spatial resolution over Asia. | n/a | |
| GOME-2 | Operational | Measurement of total column amounts and stratospheric and tropospheric profiles of ozone. Also amounts of H20, NO2, OClO, BrO, SO2 and HCHO. | High-resolution nadir-scanning SW spectrometer | |
| HIRS/4 | Operational | Atmospheric temperature profiles and data on cloud parameters, humidity soundings, water vapour, total ozone content, and surface temperatures. Same as HIRS/3, with 10 km IFOV. | n/a | |
| IASI | Operational +/-15 % | 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 | |
| IKFS-2 | Operational | Atmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature. | High-resolution nadir-scanning IR spectrometer | |
| IRAS | Operational | Atmospheric sounding for weather forecasting. | n/a | |
| MAESTRO | Operational | Chemical processes involved in the depletion of the ozone layer, and now including a high quality water vapour data product. | Limb-scanning SW spectrometer | |
| MLS (EOS-Aura) | Operational | Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2. | Limb-scanning MW spectrometer | |
| MODIS | Operational | Data on biological and physical processes on the surface of the Earth and in the lower atmosphere, and on global dynamics. Surface temperatures of land and ocean, chlorophyll fluorescence, land cover measurements, cloud cover (day and night). | n/a | |
| MSU-GS | Operational | Measurements of cloud cover, cloud top height, precipitation, cloud motion, albedo, vegetation, convection, air mass analysis, tropopause monitoring, stability monitoring, total ozone and surface temperature, fire detection. | n/a | |
| MSU-GS/VE | Operational | Operational metrology, hydrology, climate monitoring and environmental monitoring | n/a | |
| MWHS-2 | Operational | Meteorological applications. | n/a | |
| NACHOS Hyperspectral Imager | Operational | | High-resolution nadir-scanning SW spectrometer | |
| 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 | |
| OMPS | Operational | Measures total amount of ozone in the atmosphere and the ozone concentration variation with altitude. | High-resolution nadir-scanning SW spectrometer | |
| OMPS-L | Operational +/-0.05 ppm | Measures high resolution vertical distribution of ozone and aerosols. | Limb-scanning SW spectrometer | |
| OSIRIS | Operational | Detects aerosol layers and abundance of species such as O3, NO2, OClO, BrO and NO. Consists of spectrograph and IR imager. | Limb-scanning SW spectrometer | |
| SAGE-III | Operational | Limb-viewing measurements of aerosol, O3, H20, NO2, OClO, NO3, temperature and pressure in the stratosphere, upper troposphere, and mesosphere using solar occultation, lunar occultation and limb scatter measurement techniques. | Limb-scanning SW spectrometer | |
| SBUV/2 | Operational | Data on trace gases including vertical profile ozone, and solar irradiance and total ozone concentration measurements. | High-resolution nadir-scanning SW spectrometer | |
| SEVIRI | Operational | Measurements of cloud cover, cloud top height, precipitation, cloud motion, vegetation, radiation fluxes, convection, air mass analysis, cirrus cloud discrimination, tropopause monitoring, stability monitoring, total ozone and sea surface temperature. | n/a | |
| SMR | Operational | Measures global distributions of ozone and species of importance for ozone chemistry ClO, HNO3, H2O, N2O, (HO2, H2O2). Measures temperature in the height range 15 - 100 km. | Limb-scanning MW spectrometer | |
| Sounder | Operational | Atmospheric soundings and data on atmospheric stability and thermal gradient winds. | n/a | |
| Spectrometer (TEMPO) | Operational | Hourly measurements of air pollution over North America, from Mexico City to the Canadian oil sands, at high spatial resolution. Measurements in ultraviolet and visible wavelengths will provide a suite of products including the key elements of tropospheric air pollution chemistry. Will be part of the first global geostationary constellation for pollution monitoring, along with European and Korean missions now in development. | High-resolution nadir-scanning SW spectrometer | |
| TANSO-FTS | Operational | 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 | |
| TOU/SBUS | Operational | Ozone total column vertical profile measurements. | High-resolution nadir-scanning SW spectrometer | |
| TROPOMI | Operational | Supporting atmospheric composition and air quality monitoring services. | High-resolution nadir-scanning SW spectrometer | |
| ACX | Being developed | | n/a | |
| ALTIUS Instrument | Being developed | A high-resolution 2D imager that observes ozone from side-on, at Earth's limb or atmospheric boundary. This limb-sounding technique allows ozone to be viewed at different altitudes, thereby providing vertical profiles of different ozone concentrations. The instrument uses three independent spectral imagers that operate in the ultraviolet, visible and near-infrared, achieving global coverage in a three-day revisit cycle. | n/a | |
| IASI-NG | Being developed +/-5 % | 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 | |
| IRS | Being developed | Measurements of vertically resolved clear sky atmospheric motion vectors, temperature and water vapour profiles. | n/a | |
| UVNS (Sentinel-5) | Being developed | Supporting atmospheric composition and air quality monitoring services. Measurements of atmospheric trace gases, primarily O3, NO2, SO2, HCHO, CH4, CO, CHOCHO as well as Aerosols and UV Index. | High-resolution nadir-scanning SW spectrometer | |
| IKFS-3 | Proposed | Atmospheric temperature/humidity profiles, data on cloud parameters, water vapour & ozone column amounts, surface temperature. | High-resolution nadir-scanning IR spectrometer | |
| HiRDLS | No longer operational | 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 | 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 | |