气候变化领域集成服务门户(CCPortal): Aerosol invigoration of atmospheric convection through increases in humidity

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DOI	10.1126/science.abc5181
	Aerosol invigoration of atmospheric convection through increases in humidity
	Abbott T.H.; Cronin T.W.
发表日期	2021
ISSN	0036-8075
起始页码	83
结束页码	85
卷号	371 期号:6524
英文摘要	Cloud-aerosol interactions remain a major obstacle to understanding climate and severe weather. Observations suggest that aerosols enhance tropical thunderstorm activity; past research, motivated by the importance of understanding aerosol impacts on clouds, has proposed several mechanisms that could explain that observed link. We find that high-resolution atmospheric simulations can reproduce the observed link between aerosols and convection. However, we also show that previously proposed mechanisms are unable to explain the invigoration. Examining underlying processes reveals that, in our simulations, high aerosol concentrations increase environmental humidity by producing clouds that mix more condensed water into the surrounding air. In turn, higher humidity favors large-scale ascent and stronger convection. Our results provide a physical reason to expect invigorated thunderstorms in high-aerosol regions of the tropics. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	aerosol; atmospheric convection; cloud; humidity; severe weather; thunderstorm; aerosol; article; humidity; simulation; thermodynamics; thunderstorm; tropics
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246234
作者单位	Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Abbott T.H.,Cronin T.W.. Aerosol invigoration of atmospheric convection through increases in humidity[J],2021,371(6524).
APA	Abbott T.H.,&Cronin T.W..(2021).Aerosol invigoration of atmospheric convection through increases in humidity.Science,371(6524).
MLA	Abbott T.H.,et al."Aerosol invigoration of atmospheric convection through increases in humidity".Science 371.6524(2021).