On the Interplay between the Circulation in the Surface and the Intermediate Layers of the Arctic Ocean
On the Interplay between the Circulation in the Surface and the Intermediate Layers of the Arctic Ocean
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DOI：
10.1175/jpo-d-14-0183.1
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发表时间：
2015-05
影响因子：
3.5
通讯作者：
C. Lique;H. Johnson;P. Davis
中科院分区：
文献类型：
--
作者：
C. Lique;H. Johnson;P. Davis
摘要北冰洋环流传统上被认为是一个两层系统，表层有风驱动的反气旋环流，大西洋水（AW）层有气旋边界流，主要通过流入和流出向盆地的远程强迫。本文采用一个理想化的数值模型来研究两层动力学之间的相互作用，并探讨每一层的环流对任一层强迫变化的响应。模式中，表层环流强度主要由海洋表面应力旋度强度和盆地入流决定。此外，表层环流可以通过限制坡面上AW电流的横向程度来强烈调节中间层的强度。相反，AW电流强度的变化对表层环流的影响很小。表层环流的强度…
AbstractThe circulation of the Arctic Ocean has traditionally been studied as a two-layer system, with a wind-driven anticyclonic gyre in the surface layer and a cyclonic boundary current in the Atlantic Water (AW) layer, primarily forced remotely through inflow and outflow to the basin. Here, an idealized numerical model is used to investigate the interplay between the dynamics of the two layers and to explore the response of the circulation in each of the layers to a change in the forcing in either layer. In the model, the intensity of the circulation in the surface and AW layers is primarily set by the ocean surface stress curl intensity and the inflow to the basin, respectively. Additionally, the surface layer circulation can strongly modulate the intensity of the intermediate layer by constraining the lateral extent of the AW current on the slope. In contrast, a change in the AW current strength has little effect on the surface layer circulation. The intensity of the circulation in the surface layer ...