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本文利用一个湍流能量闭合的二维原始方程模式的模拟结果,分析了大尺度风场、地转惯性及地面粗糙状态对海(湖)风过程的影响,结果表明,背景风场对海(湖)风的发生有触发作用,并对其强度变化、向内陆伸进速率及结构特征也有重要影响,地转惯性作用不但会使海(湖)风逐渐转向,而且会阻尼其垂直于岸线分量的发展。 文中还较详细地讨论了根据单站探空资料获取风场初值的动力学方法及模拟起始时间的选取,文中对三种初值化方法的模拟结果进行了分析,通过对比发现带有接近实测值项的动力学方法似优于其他方法。
In this paper, the effects of large-scale wind field, ground-based inertia and ground roughness on the sea (lake) wind process are analyzed by using the simulation results of a turbulent energy closed two-dimensional original equation model. The results show that the background wind field affects the sea ) The occurrence of wind has a triggering effect, and also has an important influence on its intensity variation, inland extension rate and structural features. The inertial effect of geodetic rotation will not only gradually turn the sea and lake winds, but also dampen its perpendicularity to the shoreline Component development. In the paper, the dynamic method of obtaining the initial value of wind field and the selection of simulation starting time based on single station sounding data are also discussed in detail. The simulation results of three initializing methods are analyzed in this paper. By comparison, Kinetic methods close to the measured values seem to outperform other methods.