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DOI	10.5194/acp-20-8251-2020
	Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature
	Tang T.; Shindell D.; Zhang Y.; Voulgarakis A.; Lamarque J.-F.; Myhre G.; Stjern C.W.; Faluvegi G.; Samset B.H.
发表日期	2020
ISSN	1680-7316
起始页码	8251
结束页码	8266
卷号	20 期号:13
英文摘要	Shortwave cloud radiative effects (SWCREs), defined as the difference of the shortwave radiative flux between all-sky and clear-sky conditions at the surface, have been reported to play an important role in influencing the Earth's energy budget and temperature extremes. In this study, we employed a set of global climate models to examine the SWCRE responses to CO2, black carbon (BC) aerosols, and sulfate aerosols in boreal summer over the Northern Hemisphere. We found that CO2 causes positive SWCRE changes over most of the NH, and BC causes similar positive responses over North America, Europe, and eastern China but negative SWCRE over India and tropical Africa. When normalized by effective radiative forcing, the SWCRE from BC is roughly 3-5 times larger than that from CO2. SWCRE change is mainly due to cloud cover changes resulting from changes in relative humidity (RH) and, to a lesser extent, changes in cloud liquid water, circulation, dynamics, and stability. The SWCRE response to sulfate aerosols, however, is negligible compared to that for CO2 and BC because part of the radiation scattered by clouds under all-sky conditions will also be scattered by aerosols under clear-sky conditions. Using a multilinear regression model, it is found that mean daily maximum temperature (Tmax) increases by 0.15 and 0.13K per watt per square meter (Wm..2) increase in local SWCRE under the CO2 and BC experiment, respectively. When domain-averaged, the contribution of SWCRE change to summer mean Tmax changes was 10 %-30% under CO2 forcing and 30 %-50% under BC forcing, varying by region, which can have important implications for extreme climatic events and socioeconomic activities. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	aerosol; air temperature; black carbon; carbon dioxide; climate change; climate effect; climate modeling; cloud radiative forcing; greenhouse gas; Northern Hemisphere; shortwave radiation; sulfate; summer; Arica; Arica and Parinacota; Chile; China; Europe; India; North America
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/247649
作者单位	Division of Earth and Ocean Sciences, Duke University, Durham, NC, United States; Department of Physics, Imperial College London, London, United Kingdom; National Center for Atmospheric Research, Boulder, CO, United States; CICERO, Center for International Climate and Environment Research, Oslo, Norway; Center for Climate System Research, Columbia University, New York, NY, United States; NASA Goddard Institute for Space Studies, New York, NY, United States
推荐引用方式 GB/T 7714	Tang T.,Shindell D.,Zhang Y.,et al. Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature[J],2020,20(13).
APA	Tang T..,Shindell D..,Zhang Y..,Voulgarakis A..,Lamarque J.-F..,...&Samset B.H..(2020).Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(13).
MLA	Tang T.,et al."Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.13(2020).