城市大气边界层分析中的相似理论应用研究

以ＭｏｎｉｎＯｂｕｋｏｖ 相似理论为依据，利用拟合方法和迭代法计算非均匀下垫面近地层湍流特征参数。通过对新疆库尔勒市郊相对平坦地形上的系留探空资料计算分析说明，两种计算方法所得的湍流特征参数相差较大；如何考虑外部参数ｚ０ 对确定非均一下垫面湍流特征参数非常重要。研究结果认为，３００ｍ 以下用乘幂律风廓线描述风速随高度分布是比较合适的

Application Study of Surface Layer Similarity Theory in ABL of Urban Area

Based on the Monin Obukov Similarity Theory, the paper discusses the efects of non homogenized surfaces on the scaling parameters of turbulent fluxes according to two kinds of methods in which the considerations of z 0 are different. The results from Tethersonde system observations in Kuler show that the two methods lead to significant diversity for the same data, and a proper method to involve z 0 is essential for determining the parameters over non homogeneous surfaces. A Power Law wind profile shows good agreement with observations from the ground to a height of 300m.