| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
ACE-FTS
Atmospheric Chemistry Experiment (ACE) Fourier Transform Spectrometer | 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 |  |
AHSI
The Advanced Hyperspectral Imager | Operational
| Greenhouse Gases (CO2, CH4, N2O, etc), Atmospheric Pollutants (NO2, SO2, HCHO, etc) | n/a | |
EMI-2
Environment Monitoring Instrument-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 | |
GEMS
Geostationary Environment Monitoring Spectrometer | Operational
| Measurements of atmospheric chemistry, precursors of aerosols and ozone in particular, in high temporal and spatial resolution over Asia. | n/a | |
LMI
Lightning Mapping Imager | Operational
| Lightning mapping for locating thunder storms in flooding season, CCD camera operating 0.77 µm to count flashes and intensity. | n/a | |
MAESTRO
Measurements of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation | 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 | |
NACHOS Hyperspectral Imager
NACHOS Hyperspectral Imager | Operational
| | High-resolution nadir-scanning SW spectrometer | |
OSIRIS
Optical Spectrograph and Infra-Red Imaging System | 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
Stratospheric Aerosol and Gas Experiment | 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 | |
Spectrometer (TEMPO)
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 | |
TROPOMI
TROPOMI | Operational
| Supporting atmospheric composition and air quality monitoring services. | High-resolution nadir-scanning SW spectrometer | |
ACX
GeoXO Atmospheric Composition Instrument | Being developed
| | n/a | |
CO2I
Integrated CO2 & NO2 Imaging spectrometer | Being developed
| 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 | |
TANSO-3
Total Anthropogenic and Natural emissions mapping SpectrOmeter-3 | Being developed
| 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 IR spectrometer | |
HiRDLS
High Resolution Dynamics Limb Sounder | 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 | |