Articles | Volume 15, issue 19
https://doi.org/10.5194/amt-15-5861-2022
https://doi.org/10.5194/amt-15-5861-2022
Research article
 | 
14 Oct 2022
Research article |  | 14 Oct 2022

3D trajectories and velocities of rainfall drops in a multifractal turbulent wind field

Auguste Gires, Ioulia Tchiguirinskaia, and Daniel Schertzer

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Revised manuscript accepted for NPG
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Cited articles

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Biaou, A., Chauvin, F., Royer, J.-F., and Schertzer, D.: Analyse multifractale des précipitations dans un scénario GIEC du CNRM, Note de centre GMGEC, CNRM, Vol. 101, 2005. a
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Short summary
Weather radars measure rainfall in altitude whereas hydro-meteorologists are mainly interested in rainfall at ground level. During their fall, drops are advected by the wind which affects the location of the measured field. Governing equation linking acceleration, gravity, buoyancy, and drag force is updated to account for oblateness of drops. Then multifractal wind is used as input to explore velocities and trajectories of drops. Finally consequence on radar rainfall estimation is discussed.