Vertical Structure of Ocean Mesoscale Eddies with Implications for Parameterizations of Tracer Transport
Vertical Structure of Ocean Mesoscale Eddies with Implications for Parameterizations of Tracer Transport
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DOI：
10.1029/2020ms002151
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发表时间：
2020-10
影响因子：
6.8
通讯作者：
Z. Stanley;S. Bachman;I. Grooms
中科院分区：
文献类型：
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作者：
Z. Stanley;S. Bachman;I. Grooms
Gent-McWilliams参数化常用于全球海洋模式中模拟未分辨中尺度涡旋影响的示踪剂输送平流分量。使用0.1°分辨率的全球海冰模拟数据研究了该参数化中传输系数的垂直结构。垂直结构被认为是很好地近似的斜压模式结构，在底部没有流动，虽然水平各向异性是至关重要的，以获得一个良好的拟合。这种垂直结构是由参考中尺度涡动速度和密度异常的垂直结构所激发的，这也是从数据中诊断出来的。
The Gent–McWilliams parameterization is commonly used in global ocean models to model the advective component of tracer transport effected by unresolved mesoscale eddies. The vertical structure of the transfer coefficient in this parameterization is studied using data from a 0.1° resolution global ocean‐ice simulation. The vertical structure is found to be well approximated by a baroclinic mode structure with no flow at the bottom, though horizontal anisotropy is crucial for obtaining a good fit. This vertical structure is motivated by reference to the vertical structure of mesoscale eddy velocity and density anomalies, which are also diagnosed from the data.