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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 22
Atmos. Chem. Phys., 17, 13509–13520, 2017
https://doi.org/10.5194/acp-17-13509-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 17, 13509–13520, 2017
https://doi.org/10.5194/acp-17-13509-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 14 Nov 2017

Research article | 14 Nov 2017

Stochastic coalescence in Lagrangian cloud microphysics

Piotr Dziekan and Hanna Pawlowska
Model code and software

Model code P. Dziekan https://doi.org/10.5281/zenodo.1009443

The libcloudph++ cloud microphysics library S. Arabas, A. Jaruga, M. Waruszewski, D. Jarecka, and P. Dziekan https://doi.org/10.5281/zenodo.1009449

Publications Copernicus
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Short summary
Raindrops form when small cloud droplets collide with each other. In most computer models of clouds, this process is described using the Smoluchowski equation. We compare the Smoluchowski equation with computer simulations in which each droplet within a small part of the cloud is modeled. We show, depending on the simulation setup, that the Smoluchowski equation can give overly slow or fast rain formation. This implies that many cloud models used do not correctly represent rain formation.
Raindrops form when small cloud droplets collide with each other. In most computer models of...
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