| CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
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Measurements > Atmosphere >
Cloud particle properties and profile >
Cloud ice content (at cloud top)
  | Measurement Definition*: Vertical profile of the size distribution of ice particles, assimilated to spheres of the same volume. Requested in the troposphere (assumed height: 12 km), and at the cloud top surface - Physical unit: [ mm ] - Accuracy unit: [ mm ]. |
| 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 | |
MLS (EOS-Aura)
Microwave Limb Sounder (EOS-Aura) | Operational
| Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2. | n/a | |
MODIS
MODerate-Resolution Imaging Spectroradiometer | 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 | |
MWRI
Micro-Wave Radiation Imager | Operational
| All weather observations of precipitation, cloud features, vegetation, soil moisture sea ice, etc. | n/a | |
CPR (EarthCARE)
Cloud Profiling Radar (EarthCARE) | Being developed
| Measurement of cloud properties, light precipitation, vertical motion. | n/a | |
GEOXO Imager
GEO Extended Operations Imager | Being developed
| 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 | |
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* Description adapted from WMO.
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