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  4. 中国科学院新生代地质与环境重点实验室
The role of Central Asian uplift in East Asian Monsoon circulation and its palaeoclimate implication

文献类型：期刊论文

作者Zoura, D.2; Haywood, A. M.2; Hill, D. J.2; Dolan, A. M.2; Tang, Z.1
刊名GLOBAL AND PLANETARY CHANGE
出版日期2020
卷号184页码:8
ISSN号0921-8181
关键词East Asian Monsoon Uplift Climate Monsoonal precipitation
DOI10.1016/j.gloplacha.2019.103073
英文摘要It has been clearly established that the climate of Asia is significantly affected by high-elevation orogens such as the Tibetan Plateau, Mongolian Plateau and Tian-Shan. The East Asian Monsoon (EAM), one of the most prominent features of Asian climate, has been well studied in a modem context and its dynamics are generally well understood. However, specific features of the EAM are less studied and understood in a palaeoclimate context, largely because of associated uncertainties in palaeotopography for the Cenozoic era. Here, we investigate changes in the individual stages of the EAM in response to increasing topography over Central Asia. We perform a series of sensitivity experiments with different palaeogeographic elevations using a coupled ocean-atmosphere General Circulation Model (HadCM3), to investigate seasonal variability of the EAM, and investigate the emergent critical threshold in elevation where the patterns of atmospheric circulation and climate over Asia attains the characteristics observed in the modem climate system. Our results indicate that above an elevation threshold of 3000 m, EAM circulation follows the modem pattern, but below that threshold, EAM circulation and precipitation follow a distinctly different pattern, where the westerly jet does not propagate into the higher latitudes and monsoonal precipitation is limited to June and July. This shift in circulation pattern has important implications for the successful interpretation of proxy-based palaeoclimate and environmental reconstructions. In addition, our results emphasize the importance of the latitudinal position of high-elevation on the EAM circulation, by showing that low-elevation can produce modem-like EAM conditions, if located at different latitudes than modern.
WOS关键词NORTHERN TIBETAN PLATEAU ; GENERAL-CIRCULATION ; MONGOLIAN PLATEAU ; CLIMATE ; EVOLUTION ; IMPACT ; CONSTRAINTS ; SEASONALITY ; SIMULATION ; EOCENE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26020401] ; National Natural Science Foundation of China[41472151]
WOS研究方向Physical Geography ; Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000508491500015
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/95903]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Zoura, D.
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Univ Leeds, Sch Earth & Environm, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England
推荐引用方式
GB/T 7714		 Zoura, D.,Haywood, A. M.,Hill, D. J.,et al. The role of Central Asian uplift in East Asian Monsoon circulation and its palaeoclimate implication[J]. GLOBAL AND PLANETARY CHANGE,2020,184:8.
APA Zoura, D.,Haywood, A. M.,Hill, D. J.,Dolan, A. M.,&Tang, Z..(2020).The role of Central Asian uplift in East Asian Monsoon circulation and its palaeoclimate implication.GLOBAL AND PLANETARY CHANGE,184,8.
MLA Zoura, D.,et al."The role of Central Asian uplift in East Asian Monsoon circulation and its palaeoclimate implication".GLOBAL AND PLANETARY CHANGE 184(2020):8.

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来源：地质与地球物理研究所

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