Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans

Abstract Aerosol effects on convective clouds and associated precipitation constitute an important open-ended question in climate research. Previous studies have linked an increase in aerosol concentration to a delay in the onset of rain, invigorated clouds and stronger rain rates. Here, using obser...

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Autores principales:	Huan Liu, Jianping Guo, Ilan Koren, Orit Altaratz, Guy Dagan, Yuan Wang, Jonathan H. Jiang, Panmao Zhai, Yuk L. Yung
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a87c1a03419c4f51a2805cc64a32fe23
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spelling	oai:doaj.org-article:a87c1a03419c4f51a2805cc64a32fe232021-12-02T15:09:16ZNon-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans10.1038/s41598-019-44284-22045-2322https://doaj.org/article/a87c1a03419c4f51a2805cc64a32fe232019-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-44284-2https://doaj.org/toc/2045-2322Abstract Aerosol effects on convective clouds and associated precipitation constitute an important open-ended question in climate research. Previous studies have linked an increase in aerosol concentration to a delay in the onset of rain, invigorated clouds and stronger rain rates. Here, using observational data, we show that the aerosol effect on convective clouds shifts from invigoration to suppression with increasing aerosol optical depth. We explain this shift in trend (using a cloud model) as the result of a competition between two types of microphysical processes: cloud-core-based invigorating processes vs. peripheral suppressive processes. We show that the aerosol optical depth value that marks the shift between invigoration and suppression depends on the environmental thermodynamic conditions. These findings can aid in better parameterizing aerosol effects in climate models for the prediction of climate trends.Huan LiuJianping GuoIlan KorenOrit AltaratzGuy DaganYuan WangJonathan H. JiangPanmao ZhaiYuk L. YungNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Huan Liu Jianping Guo Ilan Koren Orit Altaratz Guy Dagan Yuan Wang Jonathan H. Jiang Panmao Zhai Yuk L. Yung Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
description	Abstract Aerosol effects on convective clouds and associated precipitation constitute an important open-ended question in climate research. Previous studies have linked an increase in aerosol concentration to a delay in the onset of rain, invigorated clouds and stronger rain rates. Here, using observational data, we show that the aerosol effect on convective clouds shifts from invigoration to suppression with increasing aerosol optical depth. We explain this shift in trend (using a cloud model) as the result of a competition between two types of microphysical processes: cloud-core-based invigorating processes vs. peripheral suppressive processes. We show that the aerosol optical depth value that marks the shift between invigoration and suppression depends on the environmental thermodynamic conditions. These findings can aid in better parameterizing aerosol effects in climate models for the prediction of climate trends.
format	article
author	Huan Liu Jianping Guo Ilan Koren Orit Altaratz Guy Dagan Yuan Wang Jonathan H. Jiang Panmao Zhai Yuk L. Yung
author_facet	Huan Liu Jianping Guo Ilan Koren Orit Altaratz Guy Dagan Yuan Wang Jonathan H. Jiang Panmao Zhai Yuk L. Yung
author_sort	Huan Liu
title	Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
title_short	Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
title_full	Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
title_fullStr	Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
title_full_unstemmed	Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans
title_sort	non-monotonic aerosol effect on precipitation in convective clouds over tropical oceans
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a87c1a03419c4f51a2805cc64a32fe23
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_version_	1718387893459746816

Non-Monotonic Aerosol Effect on Precipitation in Convective Clouds over Tropical Oceans

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