DOI: 10.1007/s00382-015-2561-x
Scopus记录号: 2-s2.0-84947484452
论文题名: Indications for a North Atlantic ocean circulation regime shift at the onset of the Little Ice Age
作者: Schleussner C.-F. ; Divine D.V. ; Donges J.F. ; Miettinen A. ; Donner R.V.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-11-12 起始页码: 3623
结束页码: 3633
语种: 英语
英文关键词: Horizontal visibility graphs
; Last millennium
; Little Ice Age
; Marine sediments
; Time series irreversibility
; Tipping element
; Volcanic forcing
英文摘要: A prominent characteristic of the reconstructed Northern Hemisphere temperature signal over the last millennium is the transition from the Medieval Climate Anomaly to the Little Ice Age (LIA). Here we report indications for a non-linear regime shift in the North Atlantic ocean circulation at the onset of the LIA. Specifically, we apply a novel statistical test based on horizontal visibility graphs to two ocean sediment August sea-surface temperature records from the Norwegian Sea and the central subpolar basin and find robust indications of time-irreversibility in both records during the LIA onset. Despite a basin-wide cooling trend, we report an anomalous warming in the central subpolar basin during the LIA that is reproduced in ensemble simulations with the climate model of intermediate complexity CLIMBER-3α as a result of a non-linear regime shift in the subpolar North Atlantic ocean circulation. The identified volcanically triggered non-linear transition in the model simulations provides a plausible explanation for the signatures of time-irreversibility found in the ocean sediment records. Our findings indicate a potential multi-stability of the North Atlantic ocean circulation and its importance for regional climate change on centennial time scales. © 2015, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53934
Appears in Collections: 过去全球变化的重建
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作者单位: Climate Analytics, Berlin, Germany; Potsdam Institute for Climate Impact Research, Potsdam, Germany; Norwegian Polar Institute, Fram Centre, Tromsø, Norway; Department of Mathematics and Statistics, University of Tromsø, Tromsø, Norway; Stockholm Resilience Centre, Stockholm University, Stockholm, Sweden
Recommended Citation:
Schleussner C.-F.,Divine D.V.,Donges J.F.,et al. Indications for a North Atlantic ocean circulation regime shift at the onset of the Little Ice Age[J]. Climate Dynamics,2015-01-01,45(2017-11-12)