Articles | Volume 24, issue 15
https://doi.org/10.5194/acp-24-8653-2024
https://doi.org/10.5194/acp-24-8653-2024
Research article
 | 
06 Aug 2024
Research article |  | 06 Aug 2024

Investigating the sign of stratocumulus adjustments to aerosols in the ICON global storm-resolving model

Emilie Fons, Ann Kristin Naumann, David Neubauer, Theresa Lang, and Ulrike Lohmann

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Aerosols can modify the liquid water path (LWP) of stratocumulus and, thus, their radiative effect. We compare storm-resolving model and satellite data that disagree on the sign of LWP adjustments and diagnose this discrepancy with causal inference. We find that strong precipitation, the absence of wet scavenging, and cloud deepening under a weak inversion contribute to positive LWP adjustments to aerosols in the model, despite weak negative effects from cloud-top entrainment enhancement. 
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