Air humidity
Meteorological Measurements - Sensors and representativeness

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R3050 V4 Article

Air humidity
Meteorological Measurements - Sensors and representativeness

Author : Michel LEROY

Publication date: December 10, 2025 | Lire en français

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5. Air humidity

5.1 Definitions

To characterize the hygrometric state of the atmosphere, meteorologists use several parameters.

The formulas mentioned in this chapter are those recommended by the CIMO guide and are sufficient for meteorological purposes, given the measurement uncertainties of commonly used instruments.

  • Vapor pressure e , expressed in hectopascals, is the partial pressure...

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