DOI: 10.1007/s00382-013-1669-0
Scopus记录号: 2-s2.0-84891624673
论文题名: Different flavors of the Atlantic Multidecadal Variability
作者: Zanchettin D. ; Bothe O. ; Müller W. ; Bader J. ; Jungclaus J.H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-01-02 起始页码: 381
结束页码: 399
语种: 英语
英文关键词: Atlantic Multidecadal Variability
; Climate of the last millennium
; Earth system model
; Externally-forced climate variability
; Natural climate variability
; Sea-surface temperatures
; Teleconnections
英文摘要: We investigate how differently-constructed indices for North Atlantic sea-surface temperatures (NASSTs) describe the "Atlantic Multidecadal Variability" (AMV) in a suite of unperturbed as well as externally-forced millennial (pre-industrial period) climate simulations. The simulations stem from an ensemble of Earth system models differing in both resolution and complexity. Different criteria exist to construct AMV indices capturing different aspects of the phenomenon. Although all representations of the AMV maintain strong multidecadal variability, they depict different characteristics of simulated low-frequency NASST variability, evolve differently in time and relate to different hemispheric teleconnections. Due to such multifaceted signatures in the ocean-surface as well as in the atmosphere, reconstructions of past AMV may not univocally reproduce multidecadal NASST variability. AMV features under simulated externally-forced pre-industrial climate conditions are not unambiguously distinguishable, within a linear framework, from AMV features in corresponding unperturbed simulations. This prevents a robust diagnosis of the simulated pre-industrial AMV as a predominantly internal rather than externally-forced phenomenon. We conclude that a multi-perspective assessment of multidecadal NASSTs variability is necessary for understanding the origin of the AMV, its physics and its climatic implications. © 2013 Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54339
Appears in Collections: 过去全球变化的重建
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作者单位: Max Planck Institute for Meteorology, Bundesstr. 53, 20146 Hamburg, Germany; University of Hamburg, KlimaCampus Hamburg, Hamburg, Germany; Bjerknes Centre for Climate Research, Uni Research, Bergen, Norway
Recommended Citation:
Zanchettin D.,Bothe O.,Müller W.,et al. Different flavors of the Atlantic Multidecadal Variability[J]. Climate Dynamics,2014-01-01,42(2017-01-02)