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浪致辐射应力及浪致混合效应,作为海洋上层两种重要的物理过程,由于当前理论中关于其分层效应及计算公式中的误差还不是非常清楚,目前还没有在浪流耦合模式中同时考虑.本文将一种基于浪致辐射应力及浪致混合效应的参数化方案加入由浪(WAVEWATCHⅢ)和流模式(POM)组成的耦合模式中.以台风“格美”(2006)为天气背景,进行了四组数值试验.结果表明:浪致混合效应加强了混合层的湍流,加大了动量及热量向下传递率,但对表面流场的规律性改变不明显.浪致辐射应力传递表面动量通量,同时,规律性地改变了水平流场.当同时考虑两种物理过程时,其效果叠加.海流作为一种重要的动力因子,对有效波高的高度和分布有显著影响,使得动量转移,有效波高增高.模拟时次的第48 h,流矢量差值的近惯性震荡以及顺时针旋转,可能是台风靠近时浪流耦合效应加强的信号.
Wave radiation stress and wave mixing effect, as the two upper marine physics processes, due to the current theory of its stratification effect and calculation error in the formula is not yet very clear, not currently in the wave-current coupling mode In this paper, a parametric scheme based on wave-induced radiation stress and wave-induced mixing effect is added to the coupling model consisting of WAVEWATCH III and POM (Typhoon Grameen 2006) Four sets of numerical experiments were carried out.The results show that the wave-induced mixing effect enhances the turbulent flow in the mixed layer, increases the momentum and heat transfer rate, but does not change the regularity of the surface flow field. Stress transfers the surface momentum fluxes and, at the same time, changes the horizontal flow field regularly. When both physical processes are considered simultaneously, their effects are superposed. Ocean currents, as an important dynamical factor, have a significant effect on the height and distribution of effective wave heights , The momentum transfer and the effective wave height increase.At the 48th hour of simulation time, the near-inertia oscillation and clockwise rotation of the flow vector difference may be signals strengthened by the coupling effect of the waves and currents when the typhoon approaches.