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GCOS Atmosphere Surface ECV - Precipitation

Precipitation, either liquid or solid, is the most important climate variable directly affecting humans. Through either its duration, intensity and frequency or its lack of occurrence, it influences the supply of water for personal consumption and use in agriculture, manufacturing industries and power generation, causes risks to life and the functioning of society when associated with floods, landslides and droughts, and affects infrastructure planning, leisure activities and more. Precipitation is closely related to cloud properties, a number of terrestrial ECVs and to ocean-surface salinity. It is indicative of the release of latent heat within the energy cycle, as well as being at the heart of the hydrological cycle.

Product Requirements:

  • Estimates of liquid and solid precipitation:
    • Frequency: Monthly (resolving diurnal cycles and with statistics of 3 hr values)
    • Resolution: 25 km/NA
    • Required Measurement Uncertainty: 0.5 mm/h
    • Stability (per decade unless otherwise specified): 0.02 mm/decade
    • Standards/References: CMSAF requirements related to the HOAPS release 4.0 (CM-12611)
    • Entity (Satellite): WGClimate
    • Entity (in situ): WIGOS


Data Sources: