Diagnosing the role of eddies in driving the circulation of the northwest Atlantic Ocean
Diagnosing the role of eddies in driving the circulation of the northwest Atlantic Ocean
复制标题
诊断涡流在驱动西北大西洋环流中的作用
DOI：
10.1029/2004gl021146
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发表时间：
2004
影响因子：
5.2
通讯作者：
J. Sheng
中科院分区：
文献类型：
--
作者：
Xiaoming Zhai;R. Greatbatch;J. Sheng
在这封信中，我们提出了最近提出的用于海洋模型的“半预测方法”的变体。新版本的优点是有效防止模型漂移，同时细观涡流场可以自由演化。我们使用该方法来探讨西北大西洋涡流驱动环流的重要性。对于我们在这里使用的特定模型，结果表明，涡流强烈增强了向东的墨西哥湾流急流和斜坡区域的北部再循环，超过 50% 的再循环总输送量是直接由涡流驱动的。涡流还在调节纽芬兰东南部“西北角”的温度和盐度特性方面发挥着作用。
In this letter we present a variation of the recently proposed “semi‐prognostic method” for use with ocean models. The new version has the advantage that model drift is effectively prevented, while at the same time the meso‐scale eddy field is free to evolve. We use the method to probe the importance of the eddy‐driven circulation in the northwest Atlantic Ocean. For the particular model we use here, it is shown that the eddies strongly reinforce the eastward Gulf Stream jet and the northern recirculation in the slope region, with over 50% of the total transport of this recirculation being directly eddy‐driven. The eddies also play a role in setting the temperature and salinity properties of the “northwest corner” southeast of Newfoundland.