DOI: 10.1175/JCLI-D-15-0579.1
Scopus记录号: 2-s2.0-84962284824
论文题名: Mechanisms of Southern Ocean heat uptake and transport in a global eddying climate model
作者: Morrison A.K. ; Griffies S.M. ; Winton M. ; Anderson W.G. ; Sarmiento J.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 6 起始页码: 2059
结束页码: 2075
语种: 英语
Scopus关键词: Atmospheric temperature
; Carbon dioxide
; Enthalpy
; Heat transfer
; Oceanography
; Surface waters
; Eddies
; Eddy heat transport
; Geographic location
; Global climate model
; Heat budget analysis
; Meridional overturning circulations
; Sea surface temperature (SST)
; Southern ocean
; Climate models
; climate modeling
; eddy
; geographical region
; heat transfer
; meridional circulation
; overturn
; sea surface temperature
; temperature anomaly
; Southern Ocean
英文摘要: The Southern Ocean plays a dominant role in anthropogenic oceanic heat uptake. Strong northward transport of the heat content anomaly limits warming of the sea surface temperature in the uptake region and allows the heat uptake to be sustained. Using an eddy-rich global climate model, the processes controlling the northward transport and convergence of the heat anomaly in the midlatitude Southern Ocean are investigated in an idealized 1% yr-1 increasing CO2 simulation. Heat budget analyses reveal that different processes dominate to the north and south of the main convergence region. The heat transport northward from the uptake region in the south is driven primarily by passive advection of the heat content anomaly by the existing time mean circulation, with a smaller 20% contribution from enhanced upwelling. The heat anomaly converges in the midlatitude deep mixed layers because there is not a corresponding increase in the mean heat transport out of the deep mixed layers northward into the mode waters. To the north of the deep mixed layers, eddy processes drive the warming and account for nearly 80% of the northward heat transport anomaly. The eddy transport mechanism results from a reduction in both the diffusive and advective southward eddy heat transports, driven by decreasing isopycnal slopes and decreasing along-isopycnal temperature gradients on the northern edge of the peak warming. © 2016 American Meteorological Society. 资助项目: DOE, U.S. Department of Energy
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50007
Appears in Collections: 气候变化事实与影响
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作者单位: Princeton University, Princeton, NJ, United States; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Recommended Citation:
Morrison A.K.,Griffies S.M.,Winton M.,et al. Mechanisms of Southern Ocean heat uptake and transport in a global eddying climate model[J]. Journal of Climate,2016-01-01,29(6)