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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

合作研究：涡流在风驱动近惯性能的传播和耗散中的作用：连接 OGCM 和过程模拟的数值研究

基本信息

批准号：
1851572
负责人：
Marie-Pascale Lelong
金额：
$ 27.98万
依托单位：
NorthWest Research Associates, Incorporated
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-03-15 至 2024-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1851572&HistoricalAwards=false
关键词：
Collaborative Research role eddies propagation

项目摘要

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.

这个项目将研究海洋的风能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式来检查在海洋涡旋存在时控制风强迫近惯性波能的详细物理过程。这项研究还包括与法国研究人员合作，与拉格朗日运输实验(LaTeX)的观察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。结果将通过在会议和科学出版物上的陈述向科学界传播。该项目将支持一名本科生的暑期研究。尽管反气旋涡旋在将近惯性能量输送到深海中的作用早已从观测、理论和数值上得到证实，但这种能量一旦离开混合层，其命运仍然不受限制。在深海的观测仍然相对稀少。这项拟议的研究将利用数值模拟和观测数据分析来探索涡旋和近惯性波之间的相互作用，并确定存在中尺度涡旋时风生近惯性波(NIW)的耗散过程。具有高垂直分辨率和非静力动力学的Boussinesq模式将嵌套在区域环流模式(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乳胶实验的数据进行比较。这一裁决反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。