Articles | Volume 24, issue 16
https://doi.org/10.5194/acp-24-9713-2024
https://doi.org/10.5194/acp-24-9713-2024
Research article
 | 
30 Aug 2024
Research article |  | 30 Aug 2024

Microphysical modelling of aerosol scavenging by different types of clouds: description and validation of the approach

Pascal Lemaitre, Arnaud Quérel, Alexis Dépée, Alice Guerra Devigne, Marie Monier, Thibault Hiron, Chloé Soto Minguez, Daniel Hardy, and Andrea Flossmann

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Below-cloud scavenging of aerosol by rain: a review of numerical modelling approaches and sensitivity simulations with mineral dust in the Met Office's Unified Model
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Laboratory study of the collection efficiency of submicron aerosol particles by cloud droplets – Part I: Influence of relative humidity
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Laboratory study of the collection efficiency of submicron aerosol particles by cloud droplets – Part II: Influence of electric charges
Alexis Dépée, Pascal Lemaitre, Thomas Gelain, Marie Monier, and Andrea Flossmann
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Experimental evidence of the rear capture of aerosol particles by raindrops
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An experiment to measure raindrop collection efficiencies: influence of rear capture
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Subject: Aerosols | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Adachi, K., Kajino, M., Zaizen, Y., and Igarashi, Y.: Emission of spherical cesium-bearing particles from an early stage of the Fukushima nuclear accident, Sci. Rep.-UK, 3, 5, https://doi.org/10.1038/srep02554, 2013. 
Asai, T. and Kasahara, A.: A Theoretical Study of the Compensating Downward Motions Associated with Cumulus Clouds, J. Atmos. Sci., 24, 487–496, https://doi.org/10.1175/1520-0469(1967)024<0487:ATSOTC>2.0.CO;2, 1967. 
Baklanov, A. and Sørensen, J. H.: Parameterisation of radionuclide deposition in atmospheric long-range transport modelling, Phys. Chem. Earth Pt. B, 26, 787–799, 2001. 
Beard, K. V.: Experimental and numerical collision efficiencies for submicron particles scavenged by raindrops, J. Atmos. Sci., 31, 1595–1603, 1974. 
Bergeron, T.: Über die dreidimensional Verknüpfende Wetteranalyse. 1. Teil, Prinzipielle Einführung in das Problem der Luftmassen und Frontenbildung, Grøndahl & søns boktrykkeri, I kommission hos Cammermeyers boghandel, Oslo, 111 pp., 1928. 
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Short summary
A new in-cloud scavenging scheme is proposed. It is based on a microphysical model of cloud formation and may be applied to long-distance atmospheric transport models (> 100 km) and climatic models. This model is applied to the two most extreme precipitating cloud types in terms of both relative humidity and vertical extension: cumulonimbus and stratus.
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