DOI: 10.1016/j.quascirev.2013.10.025
Scopus记录号: 2-s2.0-84888786949
论文题名: Polar synchronization and the synchronized climatic history of Greenland and Antarctica
作者: Oh J. ; Reischmann E. ; Rial J.A.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 83 起始页码: 129
结束页码: 142
语种: 英语
英文关键词: Climate modeling
; Climate synchronization
; Non-linear coupling
; Non-linear oscillator
; Paleoclimate
; Polar climate
; Polar synchronization
Scopus关键词: Climate models
; Glacial geology
; Heat storage
; Isotopes
; Methane
; Phase shift
; Phase shifters
; Time series
; Adjustable parameters
; Coupled nonlinear oscillators
; Heat and mass transfer
; Non-linear oscillators
; Nonlinear coupling
; Paleoclimates
; Phase synchronization
; Polar climate
; Synchronization
; atmosphere-ocean coupling
; climate modeling
; GRIP
; heat transfer
; ice core
; last glaciation
; mass transfer
; nonlinearity
; NorthGRIP
; paleoclimate
; polar region
; proxy climate record
; stable isotope
; synchrony
; time series analysis
; Antarctica
; Arctic
; Greenland
英文摘要: Stable isotope proxies from ice cores show subtle differences in the climatic fluctuations of the Arctic and Antarctic, and recent analyses have revealed evidence of polar synchronization at the millennial time scale. At this scale, we analogize the polar climates of the last ice ages to two coupled nonlinear oscillators, which adjust their natural rhythms until they synchronize at a common frequency and constant phase shift. Heat and mass transfers across the intervening ocean and atmosphere make the coupling possible. Here we statistically demonstrate the existence of this phenomenon in polar proxy records with methane-matched age models, and quantify their phase relationship. We show that the time series of representative proxy records of the last glaciation recorded in Greenland (GRIP, NGRIP) and Antarctica (Byrd, Dome C) satisfy phase synchronization conditions, independently of age, for periods ranging 1-6ky, and can be transformed into one another by a π/2 phase shift, with Antarctica temperature variations leading Greenland's. Based on these results, we use the polar synchronization paradigm to replicate the 800ky-long, Antarctic, EPICA time series from a theoretical model that extends Greenland's 100ky-long GRIP record to 800ky. Statistical analysis of the simulated and actual Antarctic records shows that the procedure is stable to change in adjustable parameters, and requires the coupling between the polar climates to be proportional mainly to the difference in heat storage between the two regions. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60411
Appears in Collections: 过去全球变化的重建
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作者单位: Wave Propagation Laboratory, Department of Geological Sciences, University of North Carolina, Chapel Hill, NC 27599-3315, United States
Recommended Citation:
Oh J.,Reischmann E.,Rial J.A.. Polar synchronization and the synchronized climatic history of Greenland and Antarctica[J]. Quaternary Science Reviews,2014-01-01,83