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Climate changes reconstructed from a glacial lake in High Central Asiaover the past two millennia
Lan, JH(Lan, Jianghu)1; Xu, H(Xu, Hai)2; Sheng,EG(Sheng, Enguo)3; Yu, KK(Yu, Keke)4; Wu, HX(Wu, Huixian)1,5; Zhou, KG(Zhou, Kangen)1,5; Yan, DN(Yan, Dongna)1,5; Ye, YD(Ye, Yuanda)1,5; Wang, TL(Wang, Tianli)1,5; Lan, Jianghu
2018-09-10
Source PublicationQuaternary International
Volume487Issue:2018Pages:43-53
Subtype期刊论文
AbstractClimatic changes in Arid Central Asia (ACA) over the past two millennia have been widely concerned. However, less attention has been paid to those in the High Central Asia (HCA), where the Asian water tower nurtures the numerous oases by glacier and/or snow melt. Here, we present a new reconstruction of the temperature and precipitation change over the past two millennia based on grain size of a well-dated glacial lake sediment core in the central of southern Tianshan Mountains. The results show that the glacial lake catchment has experienced cold-wet climate conditions during the Dark Age Cold Period (∼300–600 AD; DACP) and the Little Ice Age (∼1300–1870 AD; LIA), whereas warm-dry conditions during the Medieval Warm Period (∼700–1270 AD; MWP). Integration of our results with those of previously published lake sediment records, stalagmite δ18O records, ice core net accumulation rates, tree-ring based temperature reconstructions, and mountain glacier activities suggest that there has a broadly similar hydroclimatic pattern over the HCA areas on centennial time scale during the past two millennia. Comparison between hydroclimatic pattern of the HCA and that of the ACA areas suggests a prevailing 'warm-dry and cold-wet' hydroclimatic pattern over the whole westerlies-dominated central Asia areas during the past two millennia. We argue that the position and intensity of the westerlies, which are closely related to the phase of the North Atlantic Oscillation (NAO), and the strength of the Siberian High pressure (SH), could have jointly modulated the late Holocene central Asia hydroclimatic changes.
KeywordHigh Central Asia Lake Harnur Climate Change Westerlies Over The Past Two Millennia
Indexed BySCI
Project Number41672169 ; 41473120 ; 41502171
Language英语
Funding OrganizationNationalNatural Science Foundation of China ; NationalNatural Science Foundation of China
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5262
Collection现代环境研究室
Corresponding AuthorLan, Jianghu
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth and Environment, Chinese Academy of Sciences, Xi'an 710061, China
2.Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
4.Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China
5.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Lan, JH,Xu, H,Sheng,EG,et al. Climate changes reconstructed from a glacial lake in High Central Asiaover the past two millennia[J]. Quaternary International,2018,487(2018):43-53.
APA Lan, JH.,Xu, H.,Sheng,EG.,Yu, KK.,Wu, HX.,...&Lan, Jianghu.(2018).Climate changes reconstructed from a glacial lake in High Central Asiaover the past two millennia.Quaternary International,487(2018),43-53.
MLA Lan, JH,et al."Climate changes reconstructed from a glacial lake in High Central Asiaover the past two millennia".Quaternary International 487.2018(2018):43-53.
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