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

Gires, Auguste; Tchiguirinskaia, Ioulia; Schertzer, Daniel

doi:https://doi.org/10.5194/amt-15-5861-2022

Articles | Volume 15, issue 19

https://doi.org/10.5194/amt-15-5861-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-15-5861-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 19

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

Data sets

Data for : "Three months of combined high resolution rainfall and wind data collected on a wind farm" Auguste Gires, Jerry Jose, Ioulia Tchiguirinskaia, and Daniel Schertzer https://doi.org/10.5281/zenodo.5801900

Combined high-resolution rainfall and wind data collected for 3 months on a wind farm 110 km southeast of Paris (France) Auguste Gires, Jerry Jose, Ioulia Tchiguirinskaia, and Daniel Schertzer https://doi.org/10.5194/essd-14-3807-2022

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.