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

合作研究：风生内波能的演化和命运

• 批准号: 2319610
• 负责人: Jonathan Lilly
• 金额: $ 24.27万
• 依托单位: Planetary Science Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2319610&HistoricalAwards=false
• 关键词: Collaborative; Research; Evolution; fate; wind

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.

该项目将研究两个主要海洋特性的全球分布，一是传播到海洋内部的与风相关的能量与在海洋表面附近消散的能量相比的比例，称为“透射率”。要研究的也与海洋中风引起的能量有关，是进入混合的能量与总耗散能量（混合加耗散）的比例，也称为“混合效率”。高分辨率（几米量级）、基于过程的数值模型、“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，并在全球范围内计算它们，结果将评估其作用。海洋内部风驱动振荡对海洋能量预算的影响，这将改善海洋环流和气候模型。该研究将支持一名职业生涯早期的女性研究人员，她将帮助其他初级科学家通过演讲提高演讲技巧。年度辅导计划，还该项目由 NSF (MPOWIR) 赞助，将为额外一年的指导计划制作材料，并增强通过网站传播的教育材料。这项研究将调查与海洋风力相关的两个参数的全球分布。一个全局参数是“透射率”，它是传播到海洋内部的与风相关的能量与在海洋表面附近消散的能量相比的一部分。第二个全局参数是“混合”。效率”，即进入混合的能量与总阻尼能量（混合和耗散）相比的比例。该研究将使用高分辨率、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，并在全球范围内计算它们，结果将是风驱动的近惯性振荡在海洋能量预算中的作用的量化。该研究将为一名职业生涯早期的女性研究人员提供支持，她将通过 MPOWIR 计划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提供材料，并增强教育材料。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。