弱不稳定层结控制下的海洋行星边界层的数值模拟研究

本申请将开发单柱海气耦合模式，研究弱不稳定层结控制下的海洋行星边界层过程。该模式中大气边界层模式将采用三阶闭合，海洋混合层模式拟利用二阶闭合，通过海气耦合，使得该单柱模式具备详细描述海气交换过程、湍流输送、长、短辐射传输以及边界层云发生、发展和维持的模拟能力。利用海气耦合的单柱模式，研究赤道东太平洋上的行星边界层过程，重点分析弱不稳定条件下的海气热量与水汽交换、湍流输送过程的物理机制，以及这种输送过程与层云产生、发展和维持过程的相互作用等科学问题。通过对比分析，进一步研究耦合模式中的行星边界层参数化对这种边界层过程的模拟能力，探讨这些层参数化的问题以及可能的改进方向。

The application will develop a single-column coupled model, study the marine planetary boundary layer under weak unstable stratification process control. In this model the atmospheric boundary layer pattern will be used the third-order closure, ocean mixed layer pattern intends to use second-order closure through air-sea coupling, so that the single-column model with the detailed simulation of the air-sea exchange process, turbulent transport, long and short radiation transfer and boundary layer stratus, development and continuance. Using the single-column mode of air-sea coupling, the study of planetary boundary layer processes in the eastern equatorial Pacific, focusing on analysis the scientific problems include air-sea exchange of heat and water, the physical mechanism of turbulent diffusion processes under the weakly unstable conditions, and this transport process with layers cloud produce, develop and sustain the process of interaction. Through comparative analysis, further study the simulation capabilities of planetary boundary layer coupled model of this boundary layer parameterization process, explore the problem of these boundary layer parameters and the possible direction of improvement.