Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
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Status: STD 2005/06/07
Code: 1090

Concept definition: The ratio of vapour pressure to saturation vapour pressure, where vapour pressure is the pressure exerted by the molecules of water vapour and saturation vapour pressure is the pressure exerted by molecules of water vapour in <AIR> that has attained saturation; relative humidity.
Attribute value type: REAL
Unit equivalence class label: PURE_NUMBER
Reference type: IR
Reference: [GMET, "relative humidity"]
Supplemental references: [JMCDM, "AIR-TEMPERATURE-ANALYSIS-FORECAST relative humidity rate" and "AIR-TEMPERATURE-OBSERVATION relative humidity rate"]

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