海洋上界面过程复杂多变，既包括表面波、飞沫等过程，也涉及这些过程与其相邻边界层中其它过程（风、海流等）的耦合作用。这些过程直接影响和控制着海气边界层结构以及海洋与大气的通量交换，对海气相互作用、海洋与大气动力学等具有十分重要的作用。虽然已有若干理论和模型在许多方面刻画了这些过程对海气通量的影响，但与现场观测（特别是极端海况）仍有若干不一致，难以满足海洋与大气监测和预报的需求。本项目拟在以往研究基础上，将海洋和大气看做两种不同介质构成的一个整体，通过理论研究、数值模拟、现场观测和资料分析等方法，系统研究不同海况和气象背景条件下海洋上界面过程对海气间动量、热量、水汽等通量的影响，揭示风应力、表面波、飞沫、波-流相互作用、波-湍相互作用等对海气边界层湍流生成和耗散以及海气通量的贡献，建立和发展更为合理的包含海洋上界面重要过程影响的海气通量参数化模型，为海气耦合模式的改进和完善等提供科学依据。

Processes in the upper interface of the ocean are complex and changeable, which include not only surface wave and droplet, but also involve the coupling of these processes and other processes (wind, current and so on) in the adjacent boundary layer. These processes directly influence and control the structure of the air-sea boundary layer and the flux exchange between the ocean and the atmosphere, which play a very important role in air-sea interactions, oceanic and atmospheric dynamics. Although some theories and models have been developed to describe the impacts of these processes on air-sea fluxes in many aspects, there are still some inconsistencies with field observations (especially under extreme sea conditions). It is far away from enough to meet the practical needs of marine and atmospheric monitoring and forecasting. Based on the previous research, this project will regard ocean and atmosphere as a whole consisting of two different mediums to study the impacts of processes in the ocean upper interface on the momentum, heat, vapor, and other fluxes between air and sea under different sea conditions and meteorological backgrounds, through theoretical research, numerical simulation, field observation and data analysis methods, to reveal the contribution of wind stress, spray, surface wave, wave-current and wave-turbulence interactions on the generation and dissipation of turbulence in air-sea boundary layer and the air-sea fluxes. A more reasonable parametric model of air-sea fluxes with the influence of the important process on the ocean upper interface is going to be developed to provide scientific basis for the improvement and perfection of the coupled model of air and sea.