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DOI10.5194/acp-20-8251-2020
Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature
Tang, Tao1; Shindell, Drew1; Zhang, Yuqiang1; Voulgarakis, Apostolos2; Lamarque, Jean-Francois3; Myhre, Gunnar4; Stjern, Camilla W.4; Faluvegi, Gregory5,6; Samset, Bjorn H.4
2020-07-16
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2020
卷号20期号:13页码:8251-8266
文章类型Article
语种英语
国家USA; England; Norway
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 (T-max) increases by 0.15 and 0.13 K 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 T-max 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.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000551510500003
WOS关键词EARTH SYSTEM MODEL ; BLACK CARBON AEROSOLS ; CLIMATE-CHANGE ; SOIL-MOISTURE ; PRECIPITATION ; SIMULATION ; FEEDBACK ; EUROPE ; HEAT ; CONVERGENCE
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/284170
专题地球科学
作者单位1.Duke Univ, Div Earth & Ocean Sci, Durham, NC 27708 USA;
2.Imperial Coll London, Dept Phys, London, England;
3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA;
4.Ctr Int Climate & Environm Res, CICERO, Oslo, Norway;
5.Columbia Univ, Ctr Climate Syst Res, New York, NY USA;
6.NASA, Goddard Inst Space Studies, New York, NY 10025 USA
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Tang, Tao,Shindell, Drew,Zhang, Yuqiang,et al. Response of surface shortwave cloud radiative effect to greenhouse gases and aerosols and its impact on summer maximum temperature[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(13):8251-8266.
APA Tang, Tao.,Shindell, Drew.,Zhang, Yuqiang.,Voulgarakis, Apostolos.,Lamarque, Jean-Francois.,...&Samset, Bjorn 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),8251-8266.
MLA Tang, Tao,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):8251-8266.
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