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Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2023

Cloud transition across the daily cycle illuminates model responses of trade cumuli to warming

Résumé

The response of trade-wind clouds to warming has long been a major source of uncertainty for climate change projections. By analyzing a set of climate models, we identify two contrasting types of model behaviors, which are evident both at the daily timescale and under global warming. These opposing behaviors depend on whether models can simulate cloud transitions—between very shallow and deeper cumuli—in response to changes in the convective mass flux. We show that the daily cycle can be used as a laboratory for assessing the physical credibility of trade cumulus responses to warming as simulated by climate models relative to observed cloud variations and processes. Our findings can also help guide future model development using observational benchmarking.
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insu-04196537 , version 1 (05-09-2023)

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Jessica Vial, Anna Lea Albright, Raphaela Vogel, Ionela Musat, Sandrine Bony. Cloud transition across the daily cycle illuminates model responses of trade cumuli to warming. Proceedings of the National Academy of Sciences of the United States of America, 2023, 120, ⟨10.1073/pnas.2209805120⟩. ⟨insu-04196537⟩
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