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Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia

文献类型：期刊论文

作者Yan, Dongna1,2; Xu, Hai4; Lan, Jianghu1; Zhou, Kangen1,2; Ye, Yuanda1,2; Zhang, Jixiao1,2; An, Zhisheng1; Yeager, Kevin M.3
刊名GLOBAL AND PLANETARY CHANGE
出版日期2019-02-01
卷号173页码:53-60
关键词Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul
ISSN号0921-8181
DOI10.1016/j.gloplacha.2018.12.006
通讯作者Xu, Hai(xuhai@tju.edu.cn)
英文摘要Hydroclimatic changes over arid central Asia (ACA) are not fully understood, primarily due to the paucity of accurate, high-resolution climatic records. Here we reconstruct hydroclimatic changes over the past 160 years at Lake Karakul, Pamir Plateau (central Asia), using multiple, high-resolution (similar to 0.8 yr) sedimentary proxies. We find that hydroclimatic changes at Lake Karakul are well correlated with meteorological records, the snow equilibrium line altitude (ELA), reconstructed regional precipitation, the westerly index, and total solar irradiance (TSI), We contend that solar activity and the westerlies were the dominant influences on ACA hydro climatic variations during the period of record: (1) solar activity dominates regional temperature variations, precipitation/evaporation, and the advance/retreat of glaciers; (2) stronger westerly intensity (corresponding to higher westerly index and higher North Atlantic Oscillation (NAO) index) brings more water vapor from the west to ACA, and vice versa; and (3) the southerly migration of the westerly jet stream, which is closely related to lower TSI and temperatures, could favor more water vapor transported to ACA areas, and vice versa. We anticipate that continued global warming will result in more rapid glacial retreat, enhanced evaporation, lake area shrinkage, and deeper aridification over ACA.
WOS关键词NORTH-ATLANTIC OSCILLATION ; HOLOCENE MOISTURE EVOLUTION ; TIEN-SHAN ; GLACIER FLUCTUATIONS ; BOSTEN LAKE ; ICE-AGE ; CLIMATE ; RECORD ; PRECIPITATION ; VARIABILITY
资助项目National Natural Science Foundation of China[41672169] ; National Natural Science Foundation of China[41502171] ; External Cooperation Program of Bureau of International Cooperation, Chinese Academy of Sciences[132B61KYSB20130003] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQG1406]
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000457512400006
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; External Cooperation Program of Bureau of International Cooperation, Chinese Academy of Sciences ; State Key Laboratory of Loess and Quaternary Geology
源URL[http://ir.ieecas.cn/handle/361006/14345]  
专题地球环境研究所_现代环境研究室
通讯作者Xu, Hai
作者单位1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA
4.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Dongna,Xu, Hai,Lan, Jianghu,et al. Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia[J]. GLOBAL AND PLANETARY CHANGE,2019,173:53-60.
APA Yan, Dongna.,Xu, Hai.,Lan, Jianghu.,Zhou, Kangen.,Ye, Yuanda.,...&Yeager, Kevin M..(2019).Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia.GLOBAL AND PLANETARY CHANGE,173,53-60.
MLA Yan, Dongna,et al."Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia".GLOBAL AND PLANETARY CHANGE 173(2019):53-60.

入库方式： OAI收割

来源：地球环境研究所

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