DOI: 10.1016/j.quascirev.2013.08.017
Scopus记录号: 2-s2.0-84884680734
论文题名: Late Holocene coupled moisture and temperature changes on the northern Tibetan Plateau
作者: He Y. ; Zhao C. ; Wang Z. ; Wang H. ; Song M. ; Liu W. ; Liu Z.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 80 起始页码: 47
结束页码: 57
语种: 英语
英文关键词: Alkenones
; Late Holocene
; Moisture change
; Northern Tibetan Plateau
; Solar irradiance
Scopus关键词: Alkenones
; Arid northwestern China
; Late Holocene
; Medieval Warm Period
; Monsoon circulations
; Natural climate variabilities
; Northern Tibetan plateaux
; Solar irradiances
; Lakes
; Solar radiation
; Uncertainty analysis
; Moisture
; climate forcing
; climate variation
; Holocene
; irradiance
; ketone
; Medieval Warm Period
; moisture content
; sediment core
; solar radiation
; westerly
; China
; Qaidam Basin
; Qinghai
; Qinghai-Xizang Plateau
英文摘要: The northern Tibetan Plateau involves complex interactions between the mid-latitude westerly circulation and the subtropical Asia monsoon circulation, acting as a bridge communicating high and low latitude climatic processes. Previous studies from the region suggest relatively wet conditions in cold periods during the late Holocene, for instance, the Little Ice Age (LIA). However, the inference of such temperature-moisture association is subject to the large uncertainty in lacustrine 14C chronology, due to the particularly large lake reservoir effect in the region. Here we take a different approach by reconstructing paired temperature and moisture records from the same sediment cores to assess the temperature-moisture association, independent of chronology uncertainty. We use alkenone indices UK'37 and %C37:4 to reconstruct high resolution temperature and moisture changes simultaneously from two lakes in the Qaidam Basin, northern Tibetan Plateau, over the last ~2500 years. Characterized by marked climatic variability, our paired records confirm the warm-dry and cold-wet association in arid northwestern China during the late Holocene, opposite to the warm-wet and cold-dry association in subtropical Asian monsoonal regions. Our moisture records further suggest substantially drier conditions during the Medieval Warm Period (MWP) than the current warm period. Lastly, the temperature and moisture changes inferred from our records can be well correlated with solar irradiance changes, suggesting a possible link between solar forcing and natural climate variability during the late Holocene on the northern Tibetan Plateau. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60459
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, The University of Hong Kong, Hong Kong, China; State Key Laboratory of Loess and Quaternary Geology, IEE, CAS, Xi'an 710075, China
Recommended Citation:
He Y.,Zhao C.,Wang Z.,et al. Late Holocene coupled moisture and temperature changes on the northern Tibetan Plateau[J]. Quaternary Science Reviews,2013-01-01,80