Distinct responses of Asian summer monsoon to black carbon aerosols and greenhouse gases | |
Xie, Xiaoning1,2; Myhre, Gunnar3; Liu, Xiaodong1,4; Li, Xinzhou1; Shi, Zhengguo1; Wang, Hongli5; Kirkevag, Alf6; Lamarque, Jean-Francois7; Shindell, Drew8; Takemura, Toshihiko9; Liu, Yangang10 | |
通讯作者 | Xie, Xiaoning(xnxie@ieecas.cn) |
2020-10-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
卷号 | 20期号:20页码:11823-11839 |
摘要 | Black carbon (BC) aerosols emitted from natural and anthropogenic sources induce positive radiative forcing and global warming, which in turn significantly affect the Asian summer monsoon (ASM). However, many aspects of the BC effect on the ASM remain elusive and largely inconsistent among previous studies, which is strongly dependent on different low-level thermal feedbacks over the Asian continent and the surrounding ocean. This study examines the response of the ASM to BC forcing in comparison with the effect of doubled greenhouse gases (GHGs) by analyzing the Precipitation Driver Response Model Intercomparison Project (PDRMIP) simulations under an extremely high BC level (10 times modern global BC emissions or concentrations, labeled BCx10) from nine global climate models (GCMs). The results show that although BC and GHGs both enhance the ASM precipitation minus evaporation (P - E; a 13.6% increase for BC forcing and 12.1% for GHGs from the nine-model ensemble, respectively), there exists a much larger uncertainty in changes in ASM P - E induced by BC than by GHGs. The summer P - E is increased by 7.7% to 15.3% due to these two forcings over three subregions, including East Asian, South Asian and western North Pacific monsoon regions. Further analysis of moisture budget re- veals distinct mechanisms controlling the increases in ASM P induced by BC and GHGs. The change in ASM P - E by BC is dominated by the dynamic effect due to the enhanced large-scale monsoon circulation, whereas the GHGinduced change is dominated by the thermodynamic effect through increasing atmospheric water vapor. Radiative forcing of BC significantly increases the upper-level atmospheric temperature over the Asian region to enhance the upper-level meridional land-sea thermal gradient (MLOTG), resulting in a northward shift of the upper-level subtropical westerly jet and an enhancement of the low-level monsoon circulation, whereas radiative forcing of GHGs significantly increases the tropical upper-level temperature, which reduces the upperlevel MLOTG and suppresses the low-level monsoonal circulation. Hence, our results indicate a different mechanism of BC climate effects under the extremely high BC level: that BC forcing significantly enhances the upper-level atmospheric temperature over the Asian region, determining ASM changes, instead of low-level thermal feedbacks as indicated by previous studies. |
DOI | 10.5194/acp-20-11823-2020 |
关键词[WOS] | SEASONAL TRANSITIONS ; RADIATIVE FEEDBACKS ; HYDROLOGICAL CYCLE ; CLIMATE ; PRECIPITATION ; DUST ; SNOW ; VARIABILITY ; MECHANISMS ; RAINFALL |
收录类别 | SCI ; SCI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[41991254] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB40030100] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20070103] ; National Key Research and Development Program of China[2016YFA0601904] ; CAS Light of West China program[XAB2019A02] ; Research Council of Norway[229771] ; Research Council of Norway[285003] ; Research Council of Norway[285013] ; Notur/NorStore[NN2345K] ; Notur/NorStore[NS2345K] ; US Department of Energy's Atmospheric System Research (ASR) program |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
项目资助者 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; CAS Light of West China program ; Research Council of Norway ; Notur/NorStore ; US Department of Energy's Atmospheric System Research (ASR) program |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:000580422300001 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/15444 |
专题 | 古环境研究室 第四纪科学与全球变化卓越创新中心 |
通讯作者 | Xie, Xiaoning |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian, Peoples R China 3.Ctr Int Climate & Environm Res, Oslo, Norway 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 5.Shaanxi Radio & TV Univ, Sch Tourism & Hospitality Management, Xian, Peoples R China 6.Norwegian Meteorol Inst, Oslo, Norway 7.Natl Ctr Atmospher Res, Boulder, CO USA 8.Duke Univ, Nicholas Sch Environm, Durham, NC USA 9.Kyushu Univ, Climate Change Sci Sect, Fukuoka, Japan 10.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA |
推荐引用方式 GB/T 7714 | Xie, Xiaoning,Myhre, Gunnar,Liu, Xiaodong,et al. Distinct responses of Asian summer monsoon to black carbon aerosols and greenhouse gases[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(20):11823-11839. |
APA | Xie, Xiaoning.,Myhre, Gunnar.,Liu, Xiaodong.,Li, Xinzhou.,Shi, Zhengguo.,...&Liu, Yangang.(2020).Distinct responses of Asian summer monsoon to black carbon aerosols and greenhouse gases.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20),11823-11839. |
MLA | Xie, Xiaoning,et al."Distinct responses of Asian summer monsoon to black carbon aerosols and greenhouse gases".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020):11823-11839. |
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