气候变化领域集成服务门户(CCPortal): Response of the Southern Ocean Overturning Circulation to Extreme Southern Annular Mode Conditions

CCPortal

DOI	10.1029/2020GL091103
	Response of the Southern Ocean Overturning Circulation to Extreme Southern Annular Mode Conditions
	Stewart K.D.; Hogg A.; England M.H.; Waugh D.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	The positive trend of the Southern Annular Mode (SAM) will impact the Southern Ocean's role in Earth's climate; however, the details of the Southern Ocean's response remain uncertain. We introduce a methodology to examine the influence of SAM on the Southern Ocean and apply this method to a global ocean-sea ice model run at three resolutions (1°, (1/4)°, and (1/10)°). Our methodology drives perturbation simulations with realistic atmospheric forcing of extreme SAM conditions. The thermal response agrees with previous studies; positive SAM perturbations warm the upper ocean north of the wind speed maximum and cool it to the south, with the opposite response for negative SAM. The overturning circulation exhibits a rapid response that increases/decreases for positive/negative SAM perturbations and is insensitive to model resolution. The longer-term adjustment of the overturning circulation, however, depends on the representation of eddies, and is faster at higher resolutions. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth (planet); Sea ice; Wind; Atmospheric forcing; Earth's climate; Higher resolution; Model resolution; Overturning circulation; Positive/negative; Southern Annular Mode; Thermal response; Oceanography; air-sea interaction; atmospheric forcing; eddy covariance; extreme event; global warming; overturn; perturbation; trend analysis; upper ocean; wind velocity; Southern Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169448
作者单位	Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; Australian Research Council Centre of Excellence for Climate Extremes, Canberra, ACT, Australia; Department of Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, MD, United States; School of Mathematics and Statistics, University of New South Wales, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Stewart K.D.,Hogg A.,England M.H.,et al. Response of the Southern Ocean Overturning Circulation to Extreme Southern Annular Mode Conditions[J],2020,47(22).
APA	Stewart K.D.,Hogg A.,England M.H.,&Waugh D.W..(2020).Response of the Southern Ocean Overturning Circulation to Extreme Southern Annular Mode Conditions.Geophysical Research Letters,47(22).
MLA	Stewart K.D.,et al."Response of the Southern Ocean Overturning Circulation to Extreme Southern Annular Mode Conditions".Geophysical Research Letters 47.22(2020).