The surface waves are the most energetic motions, which have great contribution to the turbulent mixing in the upper ocean. In this study, a novel turbulent mixing scheme is proposed in terms of the non‐breaking wave velocity shear module with the buoyancy flux. In the scheme, the mixing coefficients can be calculated empirically from the significant wave height, the wave number, the wave frequency, the buoyancy frequency, and the turbulence Prandtl number. The buoyancy fluxes, as well as the non‐breaking wave velocity shear production, are important for the upper‐ocean turbulent mixing, and make the calculated turbulence dissipation rate closer to in situ observations, which are provided by the “Responses of Marine Hazards to Climate Change in the Western Pacific (ROSE)” Project. The effects of the buoyancy flux on the turbulent mixing are examined based on three numerical experiments using the MASNUM ocean model. In the experiments, the topography, the lateral boundaries, initialization conditions, and the surface forcing fluxes are taken from the GEBCO, HYCOM/NCODA, and ERA5 data, respectively. Comparing to the AVHRR remote sensing sea surface temperature (SST) products and in situ observations, the simulated results with the non‐breaking wave‐generated turbulent mixing gain significant improvement in the SST, upper‐ocean temperature structure, and the mixed layer compared with the classic Mellor‐Yamada scheme. The results show that the buoyancy flux is able to suppress the enhanced non‐breaking wave‐generated turbulent mixing, so that the improved model simulates the observations better than that without the buoyancy effects.

中文翻译：

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浮力通量对南海非断裂面波产生的大洋湍流混合的影响

面波是最活跃的运动，对上层海洋的湍流混合有很大的贡献。在这项研究中，根据具有浮力通量的非破碎波速度剪切模块，提出了一种新颖的湍流混合方案。在该方案中，可以根据有效波高，波数，波频率，浮力频率和湍流普朗特数经验地计算混合系数。浮力通量以及不破裂的波速剪切产生，对于上层海洋湍流混合非常重要，并使计算得到的湍流耗散率更接近于原位观测，这由“海洋灾害对海洋的响应”提供。 “西太平洋气候变化（ROSE）”项目。基于使用MASNUM海洋模型的三个数值实验，考察了浮力通量对湍流混合的影响。在实验中，分别从GEBCO，HYCOM / NCODA和ERA5数据中获取了地形，横向边界，初始化条件和表面强迫通量。与AVHRR遥感海表温度（SST）产品和原位观测结果相比，与不破裂波产生的湍流混合相比，模拟结果在SST，上层海洋温度结构和混合层方面具有显着改善，与经典的Mellor-Yamada方案。结果表明，浮力通量能够抑制增强的非破坏波产生的湍流混合，