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Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon
Sun, Hui1; Liu, Xiaodong1,2
2015
Source PublicationADVANCES IN METEOROLOGY
ISSN1687-9309
Volume2015Issue:142617
SubtypeArticle
Abstract

Variations of the East Asian winter monsoon (EAWM) induced by dust aerosol are studied by using a regional climate model (RegCM4/Dust). Dust coupled and uncoupled experiments are carried out for the past decade (2000-2009). The coupled RegCM4 captures three centers of dust mixing ratio (DMR) located in the Taklamakan Desert, western Inner Mongolia, and northern Xinjiang, respectively, with maximum values greater than 500 mu g kg(-1) in winter. The surface total radiation change induced by dust is negative, and its central value of -8 W m(-2) results in surface temperature cooling by 1.5 degrees C in winter. Dust induced radiation change at the top of the atmosphere (TOA) is also negative in Northern China, except over the Tibetan Plateau (TP), and up to -5 W m(-2) in Central China. Dust cooling effects increase the sea level pressure (SLP) gradient between land and ocean, the cold surge frequency, and the East Asian jet stream (EAJ) intensity and then enhance the EAWM. The dry and cold wind pervade most areas of East Asia, suppressing large-scale precipitation and eventually leading to a rainfall decrease of about 10-30% in Northern China and the middle Yangtze River Valley.

WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1155/2015/142617
WOS KeywordRegional Climate Model ; Summer Monsoon ; Interannual Variability ; Optical-properties ; Tibetan Plateau ; Source Areas ; Emission ; Impact ; Desertification ; Predictability
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000356707400001
PublisherHINDAWI PUBLISHING CORPORATION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9298
Collection古环境研究室
Corresponding AuthorSun, Hui
Affiliation1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Sun, Hui,Liu, Xiaodong. Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon[J]. ADVANCES IN METEOROLOGY,2015,2015(142617).
APA Sun, Hui,&Liu, Xiaodong.(2015).Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon.ADVANCES IN METEOROLOGY,2015(142617).
MLA Sun, Hui,et al."Numerical Simulation of the Direct Radiative Effects of Dust Aerosol on the East Asian Winter Monsoon".ADVANCES IN METEOROLOGY 2015.142617(2015).
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