globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.03.008
Scopus记录号: 2-s2.0-84960330263
论文题名:
Response of Asian summer monsoon duration to orbital forcing under glacial and interglacial conditions: Implication for precipitation variability in geological records
作者: Shi Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 139
起始页码: 30
结束页码: 42
语种: 英语
英文关键词: Annual precipitation ; Asian monsoon ; Monsoon onset/withdrawal ; Numerical simulation ; Orbital forcing
Scopus关键词: Climate change ; Computer simulation ; Earth atmosphere ; Glacial geology ; Incident solar radiation ; Precipitation (meteorology) ; Rain ; Solar radiation ; Annual precipitation ; Asian monsoon ; Asian summer monsoons ; Atmospheric general circulation models ; Diabatic heating ; Monsoon onset ; Orbital forcing ; Precipitation variability ; Atmospheric thermodynamics ; atmospheric general circulation model ; diabatic process ; glacial environment ; insolation ; interglacial ; monsoon ; numerical model ; orbital forcing ; precipitation assessment ; summer ; Bay of Bengal ; Far East ; Indian Ocean
英文摘要: The responses of Asian summer monsoon and associated precipitation to orbital forcing have been intensively explored during the past 30 years, but debate still exists regarding whether or not the Asian monsoon is controlled by northern or southern summer insolation on the precessional timescale. Various modeling studies have been conducted that support the potential roles played by the insolation in both hemispheres. Among these previous studies, however, the main emphasis has been on the Asian monsoon intensity, with the response of monsoon duration having received little consideration. In the present study, the response of the rainy season duration over different monsoon areas to orbital forcing and its contribution to total annual precipitation are evaluated using an atmospheric general circulation model. The results show that the durations of the rainy seasons, especially their withdrawal, in northern East Asia and the India-Bay of Bengal region, are sensitive to precession change under interglacial-like conditions. Compared to those during stronger boreal summer insolation, the Asian monsoon-associated rainy seasons at weaker insolation last longer, although the peak intensity is smaller. This longer duration of rainfall, which results from the change in land-ocean thermal contrast associated with atmospheric diabatic heating, can counterbalance the weakened intensity in certain places and induce an opposite response of total annual precipitation. However, the duration effect of Asian monsoon is limited under glacial-like conditions. Nevertheless, monsoon duration is a factor that can dominate the orbital-scale variability of Asian monsoon, alongside the intensity, and it should therefore receive greater attention when attempting to explain orbital-scale monsoon change. © 2016 Elsevier Ltd.
资助项目: I appreciated two reviewers for their constructive comments for the revision on this manuscript. This work is jointly supported by the National Basic Research Program of China (2013CB955904) and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB03020601) and the National Natural Science Foundation of China (41290255, 41572160).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59625
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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; Joint Center for Global Change Studies, Beijing, China

Recommended Citation:
Shi Z.. Response of Asian summer monsoon duration to orbital forcing under glacial and interglacial conditions: Implication for precipitation variability in geological records[J]. Quaternary Science Reviews,2016-01-01,139
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