一个混合层高度发展的数值模拟试验

本文利用在ＨＥＩＦＥ期间戈壁地区采集的资料，并用一个考虑由地表热力及动力强的害和高空下沉等因子控制的零阶跳跃模式，对该地区白天混层高度增长的机制进行了数值模拟分析，结果表明：白天混合层高的增长受来自祁连山强烈的下沉冷空气的影响较大，使其高度的增长受到抑制，且最大值出现的时间超前，其结果与声雷达回波强度确定的混合层高度吻合较好。

A NUMERICAL SIMULATION EXPERIMENT FOR THE GROWTH OF MIXED-LAYER DEPTH

A numerical simulation experiment for the growth of Mixed-Layer depth was taken on In the numerical simulation experiment,the data collected in Gobi area of the HEIFE and a zero-order jump model that was governed by the thermodynamic and dynamic forcing on the ground surface and the effect of the downdraft are used The results show that the growth of Mixed-Layer depth was retained by the cold downdraft from Qilian Mountain, and the time of the maxmum Mixed-Layer depth is early,but the simulation height is agreed with the height got by echo intensity of Doppler Sodar