Vertical Air Motions and the Z-R Relation

Louis J. Battan Institute of Atmospheric Physics, University of Arizona, Tucson 85721

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Abstract

When employing radar for measuring rainfall rate, particularly for use in estimating the attenuation of radio waves, it is essential to take into account vertical air motions. An expression is derived to estimate, knowing the radar reflectivity, the rainfall rate-weighted, mean downward velocity of raindrops.

Abstract

When employing radar for measuring rainfall rate, particularly for use in estimating the attenuation of radio waves, it is essential to take into account vertical air motions. An expression is derived to estimate, knowing the radar reflectivity, the rainfall rate-weighted, mean downward velocity of raindrops.

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