Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
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Articles | Volume 26, issue 13
Articles | Volume 26, issue 13
https://doi.org/10.5194/acp-26-9879-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-9879-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 13
Research article
 | 
14 Jul 2026
Research article |  | 14 Jul 2026

Opposing entrainment effects of cloud droplet sedimentation during the pre-breakup stage of the stratocumulus to cumulus transition

Moritz Schnelke, Maike Ahlgrimm, and Anna Possner

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This study explores how the downward movement of cloud droplets due to gravity impacts the evolution of stratocumulus clouds over longer timescales. In contrast to previous conclusions, we find that the effect differs in the long-term depending on the amount of water in the cloud. In thick clouds, sedimentation reduces boundary layer growth as expected. In thin clouds, it can trigger a feedback chain that leads to more efficient growth, resulting in opposite outcomes for the two categories.
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