| 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. | n/a |  |
| 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 | |
| MLS (EOS-Aura) | Operational | Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2. | 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. | n/a | |
| 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 | |
| CWFMS | Being developed | Measurements are: Fire Radiative Power (FRP), hotspot locations, rate of spread, burned area mapping. Data products generated: 1) Fire maps, showing location, extent, and timing of forest fire events; 2) Fire characteristics, such as fire line intensity, rate of spread and fuel consumption; 3) Plume dynamics through smoke transport maps and plume heights; 4) Mass of carbon released into atmosphere. | 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 | |
| MOPITT | No longer operational | Measurements of CO in the troposphere, running 24/7, 365d of the year. | High-resolution nadir-scanning SW 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 | |