北京城区春季空气污染物垂直分布与气象条件观测分析

The perpendicular distribution of air pollutants and analysis of weather condition in Beijing urban distract in spring

分析了北京城区春季污染物 (SO2 、NOX)垂直分布与相应的气象条件之间的关系 ,结果表明 ,不同高度的 SO2 浓度差异不显著 ,而不同高度的 NOX 浓度有明显的差异 ,知春路低层浓度高于中、高层 ,潘家园则是低层低于中、高层。一日中 ,特别是当无大的天气系统影响 ,地面呈典型的山谷风日变化时不同高度的 SO2 和 NOX浓度均呈明显的峰谷变化。工作日污染物浓度比休息日浓度高 50 %。

This paper analyses the relationship between perpendicular distribution of pollutants and weather condition The results show that the density of SO 2 don't vary with height The density of NO X has obvious variety with different height For example, the density of low level is higher than middle level or high level in zhichunlu But the density of NO X in panjiayuan is opposite When it has no synoptic system to control and it has typical mountain-valley wind in a day, the density of SO 2 or NO X in different level are showed a change with peak and valley The density in working day is higher 50 percentage than the density in Saturday or Sunday