Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes

Abstract Although societally important, extreme precipitation is difficult to represent in climate models. This study shows one robust aspect of extreme precipitation across models: extreme precipitation over tropical oceans is strengthened through a positive feedback with cloud-radiative effects. T...

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Autores principales:	Brian Medeiros, Amy C. Clement, James J. Benedict, Bosong Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/e644b4fc3742433fbf9107584ec5664b
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id	oai:doaj.org-article:e644b4fc3742433fbf9107584ec5664b
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spelling	oai:doaj.org-article:e644b4fc3742433fbf9107584ec5664b2021-12-02T17:03:35ZInvestigating the impact of cloud-radiative feedbacks on tropical precipitation extremes10.1038/s41612-021-00174-x2397-3722https://doaj.org/article/e644b4fc3742433fbf9107584ec5664b2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41612-021-00174-xhttps://doaj.org/toc/2397-3722Abstract Although societally important, extreme precipitation is difficult to represent in climate models. This study shows one robust aspect of extreme precipitation across models: extreme precipitation over tropical oceans is strengthened through a positive feedback with cloud-radiative effects. This connection is shown for a multi-model ensemble with experiments that make clouds transparent to longwave radiation. In all cases, tropical extreme precipitation reduces without cloud-radiative effects. Qualitatively similar results are presented for one model using the cloud-locking method to remove cloud feedbacks. The reduced extreme precipitation without cloud-radiative feedbacks does not arise from changes in the mean climate. Rather, evidence is presented that cloud-radiative feedbacks enhance organization of convection and most extreme precipitation over tropical oceans occurs within organized systems. This result suggests that climate models must correctly predict cloud structure and properties, as well as capture the essence of organized convection in order to accurately represent extreme rainfall.Brian MedeirosAmy C. ClementJames J. BenedictBosong ZhangNature PortfolioarticleEnvironmental sciencesGE1-350Meteorology. ClimatologyQC851-999ENnpj Climate and Atmospheric Science, Vol 4, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Meteorology. Climatology QC851-999
spellingShingle	Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Brian Medeiros Amy C. Clement James J. Benedict Bosong Zhang Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
description	Abstract Although societally important, extreme precipitation is difficult to represent in climate models. This study shows one robust aspect of extreme precipitation across models: extreme precipitation over tropical oceans is strengthened through a positive feedback with cloud-radiative effects. This connection is shown for a multi-model ensemble with experiments that make clouds transparent to longwave radiation. In all cases, tropical extreme precipitation reduces without cloud-radiative effects. Qualitatively similar results are presented for one model using the cloud-locking method to remove cloud feedbacks. The reduced extreme precipitation without cloud-radiative feedbacks does not arise from changes in the mean climate. Rather, evidence is presented that cloud-radiative feedbacks enhance organization of convection and most extreme precipitation over tropical oceans occurs within organized systems. This result suggests that climate models must correctly predict cloud structure and properties, as well as capture the essence of organized convection in order to accurately represent extreme rainfall.
format	article
author	Brian Medeiros Amy C. Clement James J. Benedict Bosong Zhang
author_facet	Brian Medeiros Amy C. Clement James J. Benedict Bosong Zhang
author_sort	Brian Medeiros
title	Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
title_short	Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
title_full	Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
title_fullStr	Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
title_full_unstemmed	Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
title_sort	investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e644b4fc3742433fbf9107584ec5664b
work_keys_str_mv	AT brianmedeiros investigatingtheimpactofcloudradiativefeedbacksontropicalprecipitationextremes AT amycclement investigatingtheimpactofcloudradiativefeedbacksontropicalprecipitationextremes AT jamesjbenedict investigatingtheimpactofcloudradiativefeedbacksontropicalprecipitationextremes AT bosongzhang investigatingtheimpactofcloudradiativefeedbacksontropicalprecipitationextremes
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Investigating the impact of cloud-radiative feedbacks on tropical precipitation extremes

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