期刊
GEOPHYSICAL RESEARCH LETTERS
卷 43, 期 1, 页码 273-282出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2015GL065957
关键词
Beaufort Gyre; Eddy saturation; Arctic halocline; Freshwater content; Ekman pumping
资金
- NSF [PLR-1415489, OCE-1232389]
- Howland Postdoctoral Program Fund at WHOI
- NSF OPP [PLR-1313614, PLR-1203720]
- Directorate For Geosciences
- Division Of Ocean Sciences [1232389] Funding Source: National Science Foundation
- Directorate For Geosciences
- Office of Polar Programs (OPP) [1415489] Funding Source: National Science Foundation
Recently, the Beaufort Gyre has accumulated over 20,000km(3) of freshwater in response to strong anticyclonic atmospheric winds that have prevailed over the gyre for almost two decades. Here we explore key physical processes affecting the accumulation and release of freshwater within an idealized eddy-resolving model of the Beaufort Gyre. We demonstrate that a realistic halocline can be achieved when its deepening tendency due to Ekman pumping is counteracted by the cumulative action of mesoscale eddies. Based on this balance, we derive analytical scalings for the depth of the halocline and its spin-up time scale and emphasize their explicit dependence on eddy dynamics. Our study further suggests that the Beaufort Gyre is currently in a state of high sensitivity to atmospheric winds. However, an intensification of surface stress would inevitably lead to a saturation of the freshwater contenta constraint inherently set by the intricacies of the mesoscale eddy dynamics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据