Collaborative Research: The role of eddies in the propagation and dissipation of wind-driven near-inertial energy: a numerial study bridging OGCM and process simulations

这个项目将研究来自海洋风力的能量是如何传播到海洋内部并消散的。所使用的方法包括结合不同类型的数值模型来检查在存在海洋涡流的情况下控制风强迫近惯性波能量的详细物理过程。这项研究还包括与法国研究人员合作，对拉格朗日输运实验（LATEX）的观测结果进行比较和分析。这些结果将有助于改进气候海洋模式中混合过程的物理表示。研究结果将通过在会议上的报告和科学出版物向科学界传播。该项目将资助一名本科生进行暑期研究。虽然反气旋涡旋在将近惯性能量送入深海中的作用早已在观测、理论和数值上得到证实，但这些能量一旦离开混合层，其命运仍然不受限制。在深处的观测仍然相对稀少。本研究将利用数值模拟和观测数据分析，探索涡旋与近惯性波的相互作用，确定中尺度涡旋存在下风致近惯性波的耗散过程。一个具有高垂直分辨率和非流体静力动力学的Boussinesq模式将嵌套在一个区域环流模式（NEMO-GLAZUR64）中，以提供真实的强迫和边界条件。模型结果将与里昂湾的LATEX实验数据进行比较。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This project will examine how energy from wind forcing of the ocean propagates into the ocean interior and dissipates. The methods used include combining different types of numerical models to examine the detailed physical processes governing wind forced near-inertial wave energy in the presence of ocean eddies. The study also includes collaboration with French researchers to make comparisons with and analyze observations from the LAgrangian Transport Experiment (LATEX). The results will be useful for developing improved physical representations of mixing processes in climate ocean models. Results will be disseminated to the scientific community through presentations at conferences and scientific publications. The project will support one undergraduate student in summer research.While the role of anticyclonic eddies in fluxing near-inertial energy into the deep ocean has long been established observationally, theoretically and numerically, the fate of this energy once it leaves the mixed layer remains unconstrained. Observations at depths remain relatively sparse. The proposed research will use numerical modeling and analysis of observational data to explore interactions between eddies and near-inertial waves and determine the dissipation processes for wind-driven near-inertial waves (NIW) in the presence of mesoscale eddies. A Boussinesq model with high vertical resolution and non-hydrostatic dynamics will be nested in a regional circulation model (NEMO-GLAZUR64) to provide realistic forcing and boundary conditions. The model results will be compared with data from the LATEX experiment in the Gulf of Lyon.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.