Numerical modelling of ocean circulation using a vorticity-potential method

使用涡势法对海洋环流进行数值模拟

• 批准号: NE/I015345/1
• 负责人: David Marshall
• 金额: $ 6.4万
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FI015345%2F1
• 关键词: Numerical; modelling; ocean; circulation; using

We propose to explore the benefits of a new approach to computational modelling of the ocean circulation. The approach is based on solving the so called 'vorticity balance' of the ocean, which quantifies the processes that make the circulation 'spin' faster in the horizontal and 'overturn' in the vertical. The main advantage of this approach is that it avoids the need to solve for the pressure field, which is a major source of error in regions of steep bottom topography. Furthermore, many of our most useful conceptual models of the ocean circulation are based on vorticity, and hence it should be easier to relate the model output to these conceptual models, aiding physical interpretation of the results. If successful, this proof-of-concept project should pave the way for a standard grant application to develop a global ocean circulation model using this approach. In the longer term, this has the potential to improve the ocean component of models used for climate prediction.

我们建议探索一种新的海洋环流计算模拟方法的好处。这种方法的基础是解决所谓的海洋“涡度平衡”，它量化了使环流在水平方向上“旋转”得更快、在垂直方向上“翻转”得更快的过程。这种方法的主要优点是，它避免了需要求解压力场，而压力场是陡峭底部地形地区的主要误差来源。此外，我们许多最有用的海洋环流概念模型都是以涡度为基础的，因此应该更容易将模型输出与这些概念模型联系起来，以帮助对结果进行物理解释。如果成功，这一概念验证项目将为使用这一方法开发全球海洋环流模型的标准赠款申请铺平道路。从长远来看，这有可能改善用于气候预测的模型中的海洋部分。

项目成果

Momentum Balance of the Wind-Driven and Meridional Overturning Circulation

风动与经向翻转环流的动量平衡

• DOI: 10.1175/2010jpo4528.1
• 发表时间: 2011
• 期刊: Journal of Physical Oceanography
• 影响因子: 3.5
• 作者: Marshall D

On the dynamical influence of ocean eddy potential vorticity fluxes

• DOI: 10.1016/j.ocemod.2015.06.003
• 发表时间: 2015-08
• 期刊: Ocean Modelling
• 影响因子: 3.2
• 作者: J. Maddison;D. Marshall;J. Shipton