Articles | Volume 2, issue 2
https://doi.org/10.5194/ar-2-343-2024
https://doi.org/10.5194/ar-2-343-2024
Research article
 | 
19 Dec 2024
Research article |  | 19 Dec 2024

Cloud drop activation of insoluble aerosols aided by film-forming surfactants

Ari Laaksonen

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Cited articles

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Bain, A., Ghosh, K., Prisle, N., and Bzdek, B.: Surface-Area-to-Volume Ratio Determines Surface Tensions in Microscopic, Surfactant-Containing Droplets, ACS Cent. Sci., 9, 2076–2083, https://doi.org/10.1021/acscentsci.3c00998, 2023. a
Forestieri, S. D., Staudt, S. M., Kuborn, T. M., Faber, K., Ruehl, C. R., Bertram, T. H., and Cappa, C. D.: Establishing the impact of model surfactants on cloud condensation nuclei activity of sea spray aerosol mimics, Atmos. Chem. Phys., 18, 10985–11005, https://doi.org/10.5194/acp-18-10985-2018, 2018. a
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Short summary
Insoluble aerosol particles such as minerals and black carbon can trigger freezing inside clouds, which leads to rain formation. However, both particle types are relatively poor nuclei for cloud droplets. In this work, theoretical calculations are presented about the ability of surface-tension-reducing compounds to promote cloud drop formation around insoluble aerosols. The calculations indicate that such surfactants can be efficient in “smuggling” insoluble particles into cloud droplets.
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