DOI: 10.1016/j.palaeo.2016.02.044
论文题名: Contribution of ENSO variability to the East Asian summer monsoon in the late Holocene
作者: Zhao K. ; Wang Y. ; Edwards R.L. ; Cheng H. ; Liu D. ; Kong X. ; Ning Y.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 449 起始页码: 510
结束页码: 519
语种: 英语
英文关键词: EASM
; ENSO
; Late Holocene
; Niu Cave
; Stalagmite
英文摘要: The Asian monsoon (AM) is an important atmosphere circulation system of the global climate system, acting as a bridge across high-northern latitude and tropic climates. However, dynamical origins of AM variations during the Holocene remain unclear. Here we present stable isotope records (δ18O and δ13C) of a Holocene stalagmite from Niu Cave, central China, to address the nature and causes of East Asian summer monsoon (EASM) changes. Our δ18O record shows a gradual weakening of the EASM intensity from the middle to the late Holocene, corresponding with a decrease in Northern Hemisphere summer insolation and an enhancement of ENSO activity. The δ13C profile exhibits similar variability to δ18O record, suggesting that regional hydrological changes were primarily controlled by the large-scale summer monsoon circulation. Power spectrum analyses of δ18O and δ13C records show that the EASM intensity varies at a dominant periodicity of ~830 yr, probably correlated to an ENSO-like cycle. Furthermore, millennial-scale shifts in our records exhibit a strong correlation with that in ENSO proxies over the past 3000 years. The EASM-ENSO relationship may be related to the shifts in the mean position of Walker circulation and western North Pacific subtropical high. Our finding suggests that millennial-scale monsoon changes in the late Holocene are primarily modulated by changes in tropical ocean-atmosphere circulation, rather than variations in the North Atlantic thermohaline circulation. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68481
Appears in Collections: 过去全球变化的重建
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作者单位: College of Geography Science, Nanjing Normal University, Nanjing, China; Jiangsu Ctr. Collaborative Innovation in Geographical Information Resource Development Application, Nanjing, China; Department of Geology and Geophysics, University of Minnesota, Minneapolis, MN, United States; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China
Recommended Citation:
Zhao K.,Wang Y.,Edwards R.L.,et al. Contribution of ENSO variability to the East Asian summer monsoon in the late Holocene[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,449