基于颗粒物浓度的沙尘天气分级标准研究

Research on classification of dust and sand storm basic on particular concentration

沙尘天气在近年对我国城市空气质量造成明显影响。目前我国沙尘天气分级仍然按照气象标准 ,主要是以水平能见度进行分级。文章参考国外的有关标准 ,通过统计近年来我国沙尘天气过程中的颗粒物浓度 ,结合我国沙尘天气的发生情况和特点 。

The ambient air quality is heavily polluted by dust and sand storm in recent years. As a meteorologic index, the horizontal vi-(sibility) is used in the classification of dust and sand storm for a certain time. Now the classification of dust and sand storm basic on concentration of particular in the air has been put into used in some other countries. This article puts up a new classification of dust and sand storm basic on TSP and PM_(10) concentration.