Arid
DOI10.5194/acp-17-13731-2017
Direct radiative effects of dust aerosols emitted from the Tibetan Plateau on the East Asian summer monsoon - a regional climate model simulation
Sun, Hui1; Liu, Xiaodong1,2; Pan, Zaitao3,4
通讯作者Sun, Hui
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2017
卷号17期号:22页码:13731-13745
英文摘要

While dust aerosols emitted from major Asian sources such as Taklimakan and Gobi deserts have been shown to have strong effect on Asian monsoon and climate, the role of dust emitted from Tibetan Plateau (TP) itself, where aerosols can directly interact with the TP "heat pump" because of their physical proximity both in location and elevation, has not been examined. This study uses the dustcoupled RegCM4.1 regional climate model (RCM) to simulate the spatiotemporal distribution of dust aerosols originating within the TP and their radiative effects on the East Asian summer monsoon (EASM) during both heavy and light dust years. Two 20-year simulations with and without the dust emission from TP showed that direct radiative cooling in the mid-troposphere induced by the TP locally produced dust aerosols resulted in an overall anticyclonic circulation anomaly in the low troposphere centered over the TP region. The northeasterly anomaly in the EASM region reduces its strength considerably. The simulations found a significant negative correlation between the TP column dust load produced by local emissions and the corresponding anomaly in the EASM index (r = -0.46). The locally generated TP dust can cause surface cooling far downstream in Bohai Gulf and the China-North Korea border area through stationary Rossby wave propagation. Although dust from within TP (mainly Qaidam Basin) is a relatively small portion of total Asian aerosols, its impacts on Asian monsoon and climate seems disproportionately large, likely owning to its higher elevation within TP itself.


类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000430450800001
WOS关键词ANTHROPOGENIC AEROSOLS ; MINERAL DUST ; OPTICAL-PROPERTIES ; TAKLIMAKAN DUST ; IMPACT ; TRANSPORT ; SENSITIVITY ; RESOLUTION ; EMISSION ; FEEDBACK
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构中国科学院地球环境研究所 ; 南京信息工程大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197641
作者单位1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China;
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
3.St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63108 USA;
4.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714
Sun, Hui,Liu, Xiaodong,Pan, Zaitao. Direct radiative effects of dust aerosols emitted from the Tibetan Plateau on the East Asian summer monsoon - a regional climate model simulation[J]. 中国科学院地球环境研究所, 南京信息工程大学,2017,17(22):13731-13745.
APA Sun, Hui,Liu, Xiaodong,&Pan, Zaitao.(2017).Direct radiative effects of dust aerosols emitted from the Tibetan Plateau on the East Asian summer monsoon - a regional climate model simulation.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(22),13731-13745.
MLA Sun, Hui,et al."Direct radiative effects of dust aerosols emitted from the Tibetan Plateau on the East Asian summer monsoon - a regional climate model simulation".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.22(2017):13731-13745.
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