西固工业区光化学烟雾的数值模拟

本文给出了一个半拉格朗日形式的大气扩散模式。模式除考虑污染物在大气中的输送、弥散过程外,还加入了光化学反应过程。我们用此模式计算了1983年8月中旬兰州市西固地区的光化学烟雾浓度。计算结果和监测资料的对比表明,模式对这一地区O_3最大浓度值有较好的模拟能力,对O_3浓度的日变化及地理分布也有一定的模拟能力。

NUMERICAL SIMULATION OF PHOTOCHEMICAL SMOG POLLUTION OVER XIGU INDUSTRIAL AREA OF LANZHOU CITY

An air quality model with Semi-Lagrangian type has been developed in this paper. Except for considering the processes of transfer and diffusion of air pollution matter, the model covers the photochemical reaction effects as well. Using the model and monitored data for photochemical smog in Xigu industrial area of Lanzhou city for 6 days of August, 1983, the numerical simulation was run. The results show that the model has a quite good ability to simulate maximum concentration of O3 and certain ability to simulate the daily variations and geographical distributious of O3 concentration in the area.