Collaborative Research: Investigating the Relationship Between Ocean Surface Gravity-Capillary Waves, Surface-Layer Hydrodynamics, and Air-Sea Momentum Flux

海洋表面波通过海-气界面传递动量、热量和气体。然而，关于短波增长和方向性在调解这些交换中的作用的详细观察很少。该项目将分析在2019年底至2020年初在海气相互作用塔(ASIT)收集的大量海洋表面波、近地表流体动力学和海气动量通量数据。拟议的工作将有助于解决海气动量通量、海洋表面波和近地表流体动力学之间关系的基本方面。研究结果将被纳入新汉普郡大学关于海-气物理相互作用的新课程和哥伦比亚大学现有课程的课堂材料中。此外，调查结果将通过LDEO项目“教育工作者地球2班(E2C)讲习班”提供给纽约市地区的K-12教师。该项目将量化风强迫与短表面重力波和重力毛细波的定向增长和松弛之间的关系。海气动量通量将结合观测到的热皮平流和短波传播资料与大气湍流应力剖面和次表层速度剖面相结合。该项目的成果之一将是为海洋表面流对风强迫的响应产生一个新的参数化，其中包括湍流应力和海洋表面波状态。该奖项反映了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。

Ocean surface waves mediate the transfer of momentum, heat, and gas across the air-sea interface. Yet there exist very few detailed observations of the role of short ocean wave growth and directionality in mediating these exchanges. This project is to analyze a large set of ocean surface wave, near-surface hydrodynamics, and air-sea momentum flux data collected at the Air-Sea Interaction Tower (ASIT) between late 2019 and early 2020. The proposed work will help to resolve fundamental aspects of the relationship between air-sea momentum flux, ocean surface waves, and near-surface hydrodynamics. The results will be incorporated into classroom material for a new course on physical air-sea interaction at the University of New Hampshire and an existing course at Columbia University. Additionally, the results will be made available to K-12 teachers in the New York City area through the LDEO program "Earth2Class (E2C) Workshops for Educators". The project will quantify the relationship between wind forcing and the directional growth and relaxation of short surface gravity and gravity-capillary waves. The air-sea momentum fluxes will be addressed by combining the observed thermal skin advection and short-wave propagation data with the atmospheric turbulent stress profile and subsurface velocity profile. One of the outcomes of this project will be to produce a new parameterization for the ocean surface current response to wind forcing that incorporates turbulent stress and the ocean surface wave state.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.