CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Cloud particle properties and profile >
Cloud ice effective radius (column/profile)


Measurement Definition*: Area weighted mean radius of the cloud droplets.
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
AMI
Advanced Meteorological Imager
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.Multi-purpose imaging Vis/IR radiometer
CALIOP
Cloud-Aerosol Lidar with Orthogonal Polarization
Operational
Two-wavelength, polarisation lidar capable of providing aerosol and cloud profiles and properties.Atmospheric lidar
ICI
Ice Cloud Imager
Being developed
+/-50 %
Measures ice cloud properties (ice water path, mean ice mass height, mean ice particle size by mass), liquid/solid precipitation information, and water vapour profilesn/a
METimage
Multi Spectral Imager
Being developed
Operational multi spectral imager for meteorological EPS-SG VIS/IR Imaging Mission (VII): imagery data for global and regional NWP, NWC, and climate monitoring with information on LST, SST, clouds coverage and micro-physics, land surfaces (vegetation, snow/ice, fire), aerosol and atmospheric motion vectors. Provides collocated cloud mask & characterisation as well as intra-pixel heterogeneity to other EPS-SG missions (with larger footprint).Multi-purpose imaging Vis/IR radiometer
* Description adapted from WMO.