Articles | Volume 20, issue 20
https://doi.org/10.5194/acp-20-12163-2020
https://doi.org/10.5194/acp-20-12163-2020
Research article
 | 
27 Oct 2020
Research article |  | 27 Oct 2020

Drivers of cloud droplet number variability in the summertime in the southeastern United States

Aikaterini Bougiatioti, Athanasios Nenes, Jack J. Lin, Charles A. Brock, Joost A. de Gouw, Jin Liao, Ann M. Middlebrook, and André Welti

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Latest update: 26 May 2024
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Short summary
The number concentration of droplets in clouds in the summertime in the southeastern United States is influenced by aerosol variations but limited by the strong competition for supersaturated water vapor. Concurrent variations in vertical velocity magnify the response of cloud droplet number to aerosol increases by up to a factor of 5. Omitting the covariance of vertical velocity with aerosol number may therefore bias estimates of the cloud albedo effect from aerosols.
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