气候变化领域集成服务门户(CCPortal): Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions

CCPortal

DOI	10.5194/acp-21-3593-2021
	Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions
	Sherman P.; Gao M.; Song S.; Archibald A.T.; Luke Abraham N.; Lamarque J.-F.; Shindell D.; Faluvegi G.; McElroy M.B.
发表日期	2021
ISSN	1680-7316
起始页码	3593
结束页码	3605
卷号	21 期号:5
英文摘要	The South Asian summer monsoon supplies over 80 % of India's precipitation. Industrialization over the past few decades has resulted in severe aerosol pollution in India. Understanding monsoonal sensitivity to aerosol emissions in general circulation models (GCMs) could improve predictability of observed future precipitation changes. The aims here are (1) to assess the role of aerosols in India's monsoon precipitation and (2) to determine the roles of local and regional emissions. For (1), we study the Precipitation Driver Response Model Intercomparison Project experiments. We find that the precipitation response to changes in black carbon is highly uncertain with a large intermodel spread due in part to model differences in simulating changes in cloud vertical profiles. Effects from sulfate are clearer; increased sulfate reduces Indian precipitation, a consistency through all of the models studied here. For (2), we study bespoke simulations, with reduced Chinese and/or Indian emissions in three GCMs. A significant increase in precipitation (up to ∼20 %) is found only when both countries' sulfur emissions are regulated, which has been driven in large part by dynamic shifts in the location of convective regions in India. These changes have the potential to restore a portion of the precipitation losses induced by sulfate forcing over the last few decades. © 2021 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	aerosol composition; aerosol formation; air quality; black carbon; carbon emission; general circulation model; monsoon; precipitation (chemistry); China; India
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247078
作者单位	Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Department of Geography, Hong Kong Baptist University, Hong Kong SAR, Hong Kong; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; National Centre for Atmospheric Science, University of Cambridge, Cambridge, United Kingdom; Department of Chemistry, University of Cambridge, Cambridge, United Kingdom; National Center for Atmospheric Research, Boulder, CO, United States; Nicholas School of the Environment, Duke University, Durham, NC, United States; Nasa Goddard Institute for Space Studies, New York, NY, United States; Center for Climate Systems Research, Earth Institute, Columbia University, New York, NY, United States
推荐引用方式 GB/T 7714	Sherman P.,Gao M.,Song S.,et al. Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions[J],2021,21(5).
APA	Sherman P..,Gao M..,Song S..,Archibald A.T..,Luke Abraham N..,...&McElroy M.B..(2021).Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(5).
MLA	Sherman P.,et al."Sensitivity of modeled Indian monsoon to Chinese and Indian aerosol emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.5(2021).