Collaborative Research: Evolution and fate of wind-derived internal wave energy

该项目将研究两个主要海洋属性的全球分布。其一是与风相关的能量传播到海洋内部的比例，与在海洋表面附近消散的能量相比，被称为“透射率”。要研究的第二个特性也与海洋中的风致能量有关，即用于混合的能量与总耗散能量（混合加上耗散）的比例，也称为“混合效率”。这项研究将使用一个高分辨率（几米数量级）的基于过程的数值模型，即“波涡模型”来确定与透射率和混合效率相关的相互作用机制，并在全球范围内进行计算。研究结果将评估海洋内部由风驱动的振荡对海洋能量收支的影响，这将改进海洋环流和气候模型。这项研究将支持一名早期职业女性研究员，她将通过同样由NSF （MPOWIR）赞助的年度指导计划帮助其他初级科学家提高演讲技巧。该项目将为另一个为期一年的指导计划制作材料，并加强通过网站传播的教育材料。本研究将探讨与海洋风强迫有关的两个参数的全球分布。一个全局参数是“透射率”，它是与风有关的能量传播到海洋内部的部分，与海洋表面附近耗散的能量相比。第二个全局参数是“混合效率”，它是用于混合的能量与总阻尼能量（混合和耗散）的比例。这项研究将使用一个高分辨率的、基于过程的数值模型，即“波涡模型”来确定与这两个全局参数相关的非线性相互作用机制，并在全球范围内进行计算。研究结果将量化风驱动的近惯性振荡在海洋能量收支中的作用。这种量化将有利于海盆环流和气候模式。这项研究将支持一名早期职业女性研究人员，她将通过MPOWIR项目帮助其他初级科学家提高演讲技巧。该项目将为为期一年的指导计划制作材料，并在网站上加强教育材料。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 study the global distribution of two main ocean properties. One is the fraction of wind-related energy that propagates into the ocean’s interior compared to the energy that is dissipated near the ocean’s surface, referred to as ‘transmissivity’. The second property to study, also related to wind-induced energy in the ocean, is the fraction of energy that goes into mixing compared to the total dissipative energy (mixing plus dissipation), also known as ‘mixing efficiency’. The study will use a high-resolution (order few meters), process-based numerical model, the ‘wave-vortex model’ to determine the interaction mechanisms associated with transmissivity and mixing efficiency, and to calculate them on a global scale. The result will assess the role of wind-driven oscillations, in the interior of the ocean, on the ocean’s energy budget, which shall improve models of ocean circulation and climate. The study will support an early-career female researcher, who will help other junior scientists improve presentation skills through an annual mentoring program, also sponsored by NSF (MPOWIR). The project will produce materials for an additional yearlong mentorship program, as well as enhance educational materials that are disseminated via a web site.This study will investigate the global distribution of two parameters related to wind forcing on the ocean. One global parameter is the “transmissivity,” which is the portion of wind-related energy that propagates into the ocean’s interior compared to the energy that is dissipated near the ocean’s surface. The second global parameter is the “mixing efficiency,” which is the fraction of energy that goes into mixing compared to the total dampening energy (mixing and dissipation). The study will use a high-resolution, process-based numerical model, the ‘wave-vortex model’ to determine the nonlinear interaction mechanisms associated with the two global parameters, and to calculate them on a global scale. The result will be a quantification of the role of wind-driven near-inertial oscillations in the ocean’s energy budget. This quantification shall benefit ocean-basin circulation and climate models. The study will support an early-career female researcher, who will help other junior scientists improve presentation skills through the MPOWIR program. The project will produce materials for a yearlong mentorship program, as well as enhance educational materials in a web site.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.