摘要
本文依据一个同时包括地形、热力以及摩擦等因素在内的，能够较真实地反映复杂地形情况下，大气运动基本特征的近地层水平流场二维数值模式，将其扩展成三维模式。在此基础上，从平流扩散方程出发，建立了一个与上述流场相应的浓度场预报模式。经与实测值比较。
The two dimentional numerical model about the horizontal flow field near to the ground is developed into a three dimentional numerical model in this paper. That two dimentional numerical model includes many factors such as topography, thermodynamic property, friction and so on, it can describe the basic features of atmosphere movement in complex terrains more truely. Basing on the three dimentional model and starting from advection diffusion equation, a prediction model for concentration field is set up. Compared with practical monitoring values, reliability and suitability for models are better.
关键词
流场
浓度场
预报模式
空气污染
复杂地形
numerical calculating
flow field
concentration field
prediction model.
