Water Vapor Fields Deduced from METEOSAT-1 Water Vapor Channel Data

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  • 1 Laboratoire de Meteorologie Dymmique du C.N.R.S.,.Ecole Polytechnique, 91128 Palaiseau Cedex, France
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Abstract

A quasi-operational process for the determination of water vapor fields from METEPSAT-1 water vapor channel data is described. Each count of the WV picture is replaced by the corresponding mean relative humidity value using both the calibration of the WV channel and the empirical relation between radiance and relative humidity. Midlatitude summer and tropical regions are examined.

Abstract

A quasi-operational process for the determination of water vapor fields from METEPSAT-1 water vapor channel data is described. Each count of the WV picture is replaced by the corresponding mean relative humidity value using both the calibration of the WV channel and the empirical relation between radiance and relative humidity. Midlatitude summer and tropical regions are examined.

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