DOI: 10.1175/JCLI-D-18-0269.1
Scopus记录号: 2-s2.0-85058821293
论文题名: Ocean-atmosphere dynamical coupling fundamental to the atlantic multidecadal oscillation
作者: Wills R.C.J. ; Armour K.C. ; Battisti D.S. ; Hartmann D.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2019
卷: 32, 期: 1 起始页码: 251
结束页码: 272
语种: 英语
Scopus关键词: Atmospheric temperature
; Climate models
; Global warming
; Surface waters
; Atlantic meridional overturning circulations
; Atlantic multidecadal oscillations
; Atmospheric variability
; Coupled climate model
; High frequency variabilities
; Low-frequency components
; Multi-decadal time scale
; Multidecadal variability
; Oceanography
; air-sea interaction
; anthropogenic effect
; Atlantic Multidecadal Oscillation
; atmosphere-ocean coupling
; climate modeling
; climate variation
; global warming
; gyre
; meridional circulation
; overturn
; Atlantic Ocean
; Atlantic Ocean (North)
; Atlantic Ocean (Tropical)
英文摘要: The North Atlantic has shown large multidecadal temperature shifts during the twentieth century. There is ongoing debate about whether this variability arises primarily through the influence of atmospheric internal variability, through changes in ocean circulation, or as a response to anthropogenic forcing. This study isolates the mechanisms driving Atlantic sea surface temperature variability on multidecadal time scales by using lowfrequency component analysis (LFCA) to separate the influences of high-frequency variability, multidecadal variability, and long-term global warming. This analysis objectively identifies the North Atlantic subpolar gyre as the dominant region of Atlantic multidecadal variability. In unforced control runs of coupled climate models, warm subpolar temperatures are associated with a strengthened Atlantic meridional overturning circulation (AMOC) and anomalous local heat fluxes from the ocean into the atmosphere. Atmospheric variability plays a role in the intensification and subsequent weakening of ocean overturning and helps to communicate warming into the tropical Atlantic. These findings suggest that dynamical coupling between atmospheric and oceanic circulations is fundamental to the Atlantic multidecadal oscillation (AMO) and motivate approaching decadal prediction with a focus on ocean circulation. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117260
Appears in Collections: 气候变化与战略
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Recommended Citation:
Wills R.C.J.,Armour K.C.,Battisti D.S.,et al. Ocean-atmosphere dynamical coupling fundamental to the atlantic multidecadal oscillation[J]. Journal of Climate,2019-01-01,32(1)