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首页> 外文期刊>Geophysical Research Letters >Work done by atmospheric winds on mesoscale ocean eddies
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Work done by atmospheric winds on mesoscale ocean eddies

机译:大气风对中尺度海洋涡旋的影响

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摘要

Mesoscale eddies are ubiquitous in the ocean and dominate the ocean's kinetic energy. However, physical processes influencing ocean eddy energy remain poorly understood. Mesoscale ocean eddy-wind interaction potentially provides an energy flux into or out of the eddy field, but its effect on ocean eddies has not yet been determined. Here we examine work done by atmospheric winds on more than 1,200,000 mesoscale eddies identified from satellite altimetry data and show that atmospheric winds significantly damp mesoscale ocean eddies, particularly in the energetic western boundary current regions and the Southern Ocean. Furthermore, the large-scale wind stress curl is found to on average systematically inject kinetic energy into anticyclonic (cyclonic) eddies in the subtropical (subpolar) gyres while mechanically damps anticyclonic (cyclonic) eddies in the subpolar (subtropical) gyres.
机译:中尺度涡旋在海洋中无处不在,并主导着海洋的动能。但是,影响海洋涡流能量的物理过程仍然知之甚少。中尺度海洋涡-风相互作用可能会提供进入或离开涡流的能量通量,但尚未确定其对海洋涡流的影响。在这里,我们检查了从卫星测高数据中识别出的超过120万个中尺度涡旋上的大气风所做的工作,结果表明,大气风显着地减弱了中尺度海洋涡旋,特别是在充满活力的西部边界流域和南大洋。此外,发现大范围的风应力卷曲平均将动能系统地注入亚热带(副极)回旋的反气旋(旋风)涡流,而机械阻尼亚极性(副热带)回旋的反气旋(旋风)涡流。

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