摘要
本文采用准静力大气热力——动力学方程组和平流扩散方程的数值解方法,模拟了汾河河谷地区的流场、温度场和浓度场。所得结果和1984年春该地区进行的一次SF_(6)示踪试验资料做了对比。计算浓度场采用了三种方法:一般网格的数值模式、套网格数值模式和正态模式。和实测值的比较表明,套网格模式给出较好的计算结果,并且不需要增加过多的计算时间。
A set of hydrostatic atmospheric thermo-dynamic equations and diffusion equation are solved numerically to simulate the flow,temperature and concentration fields over Fenhe valley,Shanxi Province.The results are compared with the data observed in a tracer experiment carried out in Spring of 1984.The concentration distributions are calculated by three approaches:ordinary numerical grids model,nested grids model and Gaussian model.The comparison shows that the nested grids model gives better results and needs only a little more computer time.
作者
桑建国
Sang Jianguo(Department of Geophysics,Peking University)
出处
《气象学报》
1988年第2期219-226,共8页
Acta Meteorologica Sinica
