globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.02.011
Scopus记录号: 2-s2.0-84896803105
论文题名:
Decadal/multi-decadal temperature discrepancies along the eastern margin of the Tibetan Plateau
作者: Xu H.; Sheng E.; Lan J.; Liu B.; Yu K.; Che S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 89
起始页码: 85
结束页码: 93
语种: 英语
英文关键词: Asian summer monsoon ; Lake Lugu ; Solar activity ; Temperature discrepancy ; Tibetan Plateau
Scopus关键词: Asian summer monsoons ; Decadal variations ; Northern Hemispheres ; Precipitation trends ; Precipitation variation ; Solar activity ; Temperature variation ; Tibetan Plateau ; Atmospheric thermodynamics ; Lakes ; Solar energy ; Solar radiation ; Temperature distribution ; climate forcing ; correlation ; paleoenvironment ; precipitation (climatology) ; proxy climate record ; solar activity ; temperature profile ; time series ; transect ; China ; Qinghai-Xizang Plateau
英文摘要: Knowledge of the synchronicity and discrepancy of temperature variations along the Eastern margin of the Tibetan Plateau (ETP) is critical in understanding the driving forcing of regional temperature variations. In this study, we established δ15N timeseries in organic matter and δ13C timeseries in ostracod shells from sediments of Lake Lugu and attributed their variations to decadal/multi-decadal temperature variations. We compared temperature variations along the ETP transect during the past four centuries based on our presently developed and previously developed temperature proxy indices, as well as temperature variations reconstructed by other researchers. We found that: (1) Over the north ETP area (N-ETP), the decadal/multi-decadal variations in temperature correlate well with each other. (2) Over the south ETP area (S-ETP), temperature variations correlate not so well with each other; while those at south to west portion of the Tibetan Plateau are rather local. (3) The decadal variations in temperature are generally synchronous with those in precipitation over the N-ETP area, and they are broadly anti-phase/out-of-phase with the corresponding ones over the S-ETP area. (4) The long term temperature and precipitation trends are coupling over the N-ETP but decoupling over the S-ETP. We speculate that because the N-ETP is located at the frontier of the Asian summer monsoon (ASM) region, temperature variations there are not as strongly influenced by the ASM; they are most likely dominated by changes in solar activities, and show general similarity to the average of the Northern Hemisphere. Over the S-ETP area, decadal temperature variations are obviously influenced by precipitation. Because the decadal/multi-decadal precipitation variations are anti-phase and/or out-of-phase between the N-ETP and S-ETP, the decadal/multi-decadal temperature variations between these two regions are also anti-phase and/or out-of-phase. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60351
Appears in Collections:过去全球变化的重建

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作者单位: State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China; Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Recommended Citation:
Xu H.,Sheng E.,Lan J.,et al. Decadal/multi-decadal temperature discrepancies along the eastern margin of the Tibetan Plateau[J]. Quaternary Science Reviews,2014-01-01,89
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