Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084117 |
Eddy Saturation of the Southern Ocean: A Baroclinic Versus Barotropic Perspective | |
Constantinou, Navid C.1,2; Hogg, Andrew McC1,2 | |
2019-11-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:21页码:12202-12212 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | "Eddy saturation" is the regime in which the total time-mean volume transport of an oceanic current is relatively insensitive to the wind stress forcing and is often invoked as a dynamical description of Southern Ocean circulation. We revisit the problem of eddy saturation using a primitive equations model in an idealized channel setup with bathymetry. We apply only mechanical wind stress forcing; there is no diapycnal mixing or surface buoyancy forcing. Our main aim is to assess the relative importance of two mechanisms for producing eddy-saturated states: (i) the commonly invoked baroclinic mechanism that involves the competition of sloping isopycnals and restratification by production of baroclinic eddies and (ii) the barotropic mechanism that involves production of eddies through lateral shear instabilities or through the interaction of the barotropic current with bathymetric features. Our results suggest that the barotropic flow component plays a crucial role in determining the total volume transport. |
英文关键词 | Southern Ocean Antarctic Circumpolar Current eddy saturation ocean eddies topographic form stress wind stress |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000501723000068 |
WOS关键词 | ANTARCTIC CIRCUMPOLAR CURRENT ; WIND-DRIVEN ; OVERTURNING CIRCULATION ; MOMENTUM BALANCE ; FORM STRESS ; CURRENT TRANSPORT ; TRANSIENT EDDIES ; MODEL ; PACIFIC ; CHANNEL |
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/225029 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 2.Australian Natl Univ, ARC Ctr Excellence Climate Extremes, Canberra, ACT, Australia |
推荐引用方式 GB/T 7714 | Constantinou, Navid C.,Hogg, Andrew McC. Eddy Saturation of the Southern Ocean: A Baroclinic Versus Barotropic Perspective[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(21):12202-12212. |
APA | Constantinou, Navid C.,&Hogg, Andrew McC.(2019).Eddy Saturation of the Southern Ocean: A Baroclinic Versus Barotropic Perspective.GEOPHYSICAL RESEARCH LETTERS,46(21),12202-12212. |
MLA | Constantinou, Navid C.,et al."Eddy Saturation of the Southern Ocean: A Baroclinic Versus Barotropic Perspective".GEOPHYSICAL RESEARCH LETTERS 46.21(2019):12202-12212. |
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