DOI: 10.1002/2013GL057706
论文题名: The role of vertical eddy flux in Southern Ocean heat uptake
作者: Morrison A.K. ; Saenko O.A. ; Hogg A.McC. ; Spence P.
刊名: Geophysical Research Letters
ISSN: 0094-8458
EISSN: 1944-8189
出版年: 2013
卷: 40, 期: 20 起始页码: 5445
结束页码: 5450
语种: 英语
英文关键词: eddies
; heat uptake
; Southern Ocean
Scopus关键词: Air-sea heat flux
; Coarse-resolution model
; Cooling mechanism
; Dynamical response
; eddies
; Meridional temperature gradient
; Southern ocean
; Transient cooling
; Cooling
; Drives
; Heat flux
; Parameterization
; Thermal gradients
; Wind stress
; Oceanography
; cooling
; eddy
; heat flux
; isopycnal layer
; meridional circulation
; parameterization
; temperature gradient
; wind stress
; wind-driven circulation
; Southern Ocean
英文摘要: The role of changing vertical eddy heat flux on Southern Ocean heat uptake is investigated in an idealized eddy-permitting ocean model. Enhanced air-sea heat flux drives deep-reaching southern warming, due to a reduction in the isopycnal meridional temperature gradient and therefore decreased upward eddy heat flux. This mechanism is qualitatively similar in models with either permitted or parameterized eddies, due to its dependence on the isopycnal temperature gradient rather than the dynamical response of the eddy field. In contrast, increased wind stress drives mid-depth Southern Ocean cooling through an enhancement of the eddy field and resultant eddy heat divergence. The transient cooling extends over multiple decades while the mean flow adjusts to balance the faster eddy response. This wind-driven cooling mechanism has not been captured by coarse resolution models with fixed eddy parameterizations and is a possible candidate for the recent cooling observed in the Southern Ocean. Key Points Southern Ocean warming occurs via enhanced isopycnal temperature gradient Parameterised eddies are sufficient to model this change Enhanced wind stress drives transient cooling due to fast eddy response ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885508275&doi=10.1002%2f2013GL057706&partnerID=40&md5=85622010772fcee3f9c528eb653aaa7b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5722
Appears in Collections: 气候减缓与适应
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作者单位: ARC Centre of Excellence for Climate System Science, Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia
Recommended Citation:
Morrison A.K.,Saenko O.A.,Hogg A.McC.,et al. The role of vertical eddy flux in Southern Ocean heat uptake[J]. Geophysical Research Letters,2013-01-01,40(20).