| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
ABI
Advanced Baseline Imager | Operational
| Detects clouds, cloud properties, water vapour, land and sea surface temperatures, dust, aerosols, volcanic ash, fires, total ozone, snow and ice cover, vegetation index. | n/a |  |
Advanced MI
Advanced Meteorological Imager | Operational
| Continuous monitoring capability for the near real-time generation of high-resolution meteorological products and long-term change analysis of sea surface temperature and cloud coverage. | n/a | |
AVHRR/3
Advanced Very High Resolution Radiometer/3 | Operational
| Measurements of land and sea surface temperature, cloud cover, snow and ice cover, soil moisture and vegetation indices. Data also used for volcanic eruption monitoring. | n/a | |
CERES
Cloud and the Earth's Radiant Energy System | Operational
| Long term measurement of the Earth's radiation budget and atmospheric radiation from the top of the atmosphere to the surface; provision of an accurate and self-consistent cloud and radiation database. | n/a | |
MISR
Multi-angle Imaging SpectroRadiometer | Operational
| Measurements of global surface albedo, aerosol and vegetation properties. Also provides multi-angle bidirectional data (1% angle-to-angle accuracy) for cloud cover and reflectances at the surface and aerosol opacities. Global and local modes. | n/a | |
SSIM
Solar Spectral Irradiance Monitor | Operational
| Solar irradiance monitoring. | n/a | |
TGF Detectors
TGF Detectors | Approved
| Dedicated mission optimized for TGF observations focusing on short time scales and energy ranges not well studied by other missions. | n/a | |
MI
Meteorological Imager | No longer operational
| Continuous monitoring capability for the near real-time generation of high-resolution meteorological products and long-term change analysis of sea surface temperature and cloud coverage. Ceased operations from 1 April 2020. | n/a | |