DOI: 10.1175/JCLI-D-11-00505.1
Scopus记录号: 2-s2.0-84865155722
论文题名: On the relationship between decadal buoyancy anomalies and variability of the atlantic meridional overturning circulation
作者: Buckley M.W. ; Ferreira D. ; Campin J.-M. ; Marshall J. ; Tulloch R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 23 起始页码: 8009
结束页码: 8030
语种: 英语
Scopus关键词: Atlantic meridional overturning circulations
; Baroclinic
; Climate variability
; Coupled models
; Decadal timescale
; Decadal variability
; Deep western boundary currents
; General circulation model
; Meridional overturning circulations
; Multidecadal variability
; Ocean heat transport
; Overturning circulation
; Rossby wave
; Sea surface temperature (SST)
; Subpolar gyres
; Thermal winds
; Time-scales
; Upper ocean
; Western boundary
; Atmospheric temperature
; Climatology
; Heat transfer
; Ocean currents
; Time measurement
; Buoyancy
; boundary current
; buoyancy forcing
; climate variation
; decadal variation
; gyre
; heat transfer
; meridional circulation
; oceanic general circulation model
; Rossby wave
; sea surface temperature
英文摘要: Owing to the role of theAtlanticmeridional overturning circulation (AMOC) in ocean heat transport, AMOC variability is thought to play a role in climate variability on a widerange of time scales. This paper focuses on the potential role of the AMOC in climate variability on decadal time scales. Coupled and ocean-only general circulation models run inidealized geometries are utilized to study the relationships between decadal AMOC and buoyancy variability and determine whether the AMOC plays an active role in setting sea surface temperature on decadal time scales. Decadal AMOC variability is related to changes in the buoyancy field along the western boundary according to the thermal wind relation. Buoyancy anomalies originate in the upper ocean of the subpolar gyre and travel westward as baroclinic Rossby waves. When the buoyancy anomalies strike the western boundary, they areadvected southward by the deep western boundary current, leading tolatitudinally coherentAMOC variability. The AMOC is observed to respond passively to decadal buoyancy anomalies: although variability of the AMOC leads to meridional ocean heat transport anomalies, these transports are not responsible for creating the buoyancy anomalies in the subpolar gyre that drive AMOC variability. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52115
Appears in Collections: 气候变化事实与影响
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作者单位: Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Buckley M.W.,Ferreira D.,Campin J.-M.,et al. On the relationship between decadal buoyancy anomalies and variability of the atlantic meridional overturning circulation[J]. Journal of Climate,2012-01-01,25(23)