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

• 批准号: 1850761
• 负责人: Brendan Carter
• 金额: $ 17.03万
• 依托单位: University of Washington
• 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=1850761&HistoricalAwards=false
• 关键词: Collaborative; Research; role; eddies; propagation

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.

该项目将研究来自海洋风力的能量如何传播到海洋内部并消散。所使用的方法包括结合不同类型的数值模型，以检查详细的物理过程中，在海洋涡旋的存在下，风强迫近惯性波能。该研究还包括与法国研究人员的合作，以比较和分析拉格朗日运输实验（LATEX）的观测结果。研究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介绍和科学出版物向科学界传播。该项目将支持一名本科生进行夏季研究，虽然反气旋涡流在将近惯性能量流入深海方面的作用早已在观测、理论和数字上得到确定，但这种能量一旦离开混合层，其命运仍然不受约束。对深海的观测仍然相对稀少。拟议的研究将使用数值模拟和分析观测数据，以探讨涡和近惯性波之间的相互作用，并确定在中尺度涡的存在下，风驱动的近惯性波（NIW）的耗散过程。一个具有高垂直分辨率和非流体静力学动力学的Boussinesq模式将嵌套在一个区域环流模式（NEMO-GLAZUR 64）中，以提供现实的强迫和边界条件。模型结果将与里昂湾LATEX实验的数据进行比较。该奖项反映了NSF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。