Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071702 |
Eddy saturation and frictional control of the Antarctic Circumpolar Current | |
Marshall, David P.1; Ambaum, Maarten H. P.2; Maddison, James R.3,4; Munday, David R.5; Novak, Lenka2 | |
2017 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Scotland |
英文摘要 | The Antarctic Circumpolar Current is the strongest current in the ocean and has a pivotal impact on ocean stratification, heat content, and carbon content. The circumpolar volume transport is relatively insensitive to surface wind forcing in models that resolve turbulent ocean eddies, a process termed eddy saturation. Here a simple model is presented that explains the physics of eddy saturation with three ingredients: a momentum budget, a relation between the eddy form stress and eddy energy, and an eddy energy budget. The model explains both the insensitivity of circumpolar volume transport to surface wind stress and the increase of eddy energy with wind stress. The model further predicts that circumpolar transport increases with increased bottom friction, a counterintuitive result that is confirmed in eddy-permitting calculations. These results suggest an unexpected and important impact of eddy energy dissipation, through bottom drag or lee wave generation, on ocean stratification, ocean heat content, and potentially atmospheric CO2. |
英文关键词 | ocean eddies eddy saturation bottom drag Antarctic Circumpolar Current ocean stratification heat content |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393954900034 |
WOS关键词 | MERIDIONAL OVERTURNING CIRCULATION ; OCEAN CIRCULATION ; MESOSCALE EDDIES ; TRANSPORT ; MODEL ; ENERGY ; SINK |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28010 |
专题 | 气候变化 |
作者单位 | 1.Univ Oxford, Dept Phys, Oxford, England; 2.Univ Reading, Dept Meteorol, Reading, Berks, England; 3.Univ Edinburgh, Sch Math, Edinburgh, Midlothian, Scotland; 4.Univ Edinburgh, Maxwell Inst Math Sci, Edinburgh, Midlothian, Scotland; 5.British Antarctic Survey, Cambridge, England |
推荐引用方式 GB/T 7714 | Marshall, David P.,Ambaum, Maarten H. P.,Maddison, James R.,et al. Eddy saturation and frictional control of the Antarctic Circumpolar Current[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(1). |
APA | Marshall, David P.,Ambaum, Maarten H. P.,Maddison, James R.,Munday, David R.,&Novak, Lenka.(2017).Eddy saturation and frictional control of the Antarctic Circumpolar Current.GEOPHYSICAL RESEARCH LETTERS,44(1). |
MLA | Marshall, David P.,et al."Eddy saturation and frictional control of the Antarctic Circumpolar Current".GEOPHYSICAL RESEARCH LETTERS 44.1(2017). |
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