Ocean Circulation Features Forced by Strong Topographically-Induced Wind Stress Curl

PI建议分析高地势岛屿或沿海山脉引起的风应力旋度异常对全球海洋环流的影响。为了实现这一点，将开发一个半解析模式来探索问题的参数空间(岛屿到边界的距离、撞击岛屿的平均气流方向、异常风尾迹的方向和强度)，并对不同可能的海洋响应进行分类。他们将探索对所有感兴趣的地理区域的现有观测，以搜索预测的特征，并为拟议的动力机制的有效性提供坚实的依据。一个日益复杂的数值模型将有助于解释分析预测和实际观测之间可能存在的差异，并提供对问题的更深层次的动力学理解。更广泛的影响该项目解决了对理解和预测复杂几何环境中的大气相互作用的努力至关重要的问题，并对生态系统和渔业动力学产生了影响。它将促进知识的进步，同时促进研究生的培养。研究结果将用于改进本科生课程《全球环境数据分析》的教材，该课程由首席研究员在新的本科全球环境科学学位的框架内教授。它还将刺激和激励进一步的观测和实地考察计划，特别是在生态学和渔业方面。结果将是广泛的。

The PI proposes to analyze the impact of the wind stress curl anomalies induced by high-topography islands or coastal mountains on the global ocean circulation. To accomplish this, a semianalytical model will be developed to explore the parameter space of the problem (distance of the island from boundaries, direction of mean flow impinging on the island, direction and intensity of the anomalous wind wake) and classify the different possible oceanic responses. They will explore existing observations for all geographic areas of interest to search for the predicted features and provide solid grounds for the validity of the proposed dynamical mechanisms. A numerical model with increasing complexity will help interpret possible differences between analytical predictions and actual observations, and provide a deeper dynamical understanding of the problem. Broader ImpactsThe project addresses issues seminal to the effort of understanding and predicting atmosphere-interactions in complex geometric settings, and has implications in ecosystem and fisheries dynamics. It will advance knowledge while promoting the training of a graduate student. The results will be used to improve the material of the undergraduate course \Global Environmental Data Analysis", taught by the principal investigator in the framework of the new undergraduate Global Environmental Science degree. It will also stimulate and motivate further observations and field programs, especially in ecology and fisheries. The results will be broadly.