Solar activity and the westerlies dominate decadal hydroclimatic changes over arid Central Asia | |
Yan, Dongna1,3; Xu, Hai2; Lan, Jianghu1; Zhou, Kangen1,3; Ye, Yuanda1,3; Zhang, Jixiao1,3; An, Zhisheng1; Yeager, Kevin M.4 | |
通讯作者 | Xu, Hai(xuhai@tju.edu.cn) |
2019-02-01 | |
发表期刊 | GLOBAL AND PLANETARY CHANGE |
ISSN | 0921-8181 |
卷号 | 173页码:53-60 |
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. |
关键词 | Arid Central Asia Westerly Water vapor sources Glacier Solar activity Lake Karakul |
DOI | 10.1016/j.gloplacha.2018.12.006 |
关键词[WOS] | NORTH-ATLANTIC OSCILLATION ; HOLOCENE MOISTURE EVOLUTION ; TIEN-SHAN ; GLACIER FLUCTUATIONS ; BOSTEN LAKE ; ICE-AGE ; CLIMATE ; RECORD ; PRECIPITATION ; VARIABILITY |
收录类别 | SCI ; SCI |
语种 | 英语 |
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 |
项目资助者 | 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 |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000457512400006 |
出版者 | ELSEVIER SCIENCE BV |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/14346 |
专题 | 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.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA |
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. |
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