秦皇岛大气污染物的分布特征及其天气背景

The Distribution of The Atmospheric Pollutants and Its Weather Background in Qinhuangdao

根据官方公布的空气质量观测数据,对秦皇岛城市PM2.5细颗粒物的分布以及主要污 染物（ CO、NO2、SO2、O3）进行了分析研究.研究结果显示：秦皇岛城区年均119d处于轻 度以上污染,冬季年均有16 d处于重度以上污染,NO2是最主要污染物,PM2.5浓度在春夏季 早晚各有一个峰值、秋冬季午夜前后出现极值.“静稳天气”是空气污染的必要条件,重度 空气污染与近地面深厚逆温层紧密相关,地面风速0-3 m/s的风场会发生空气污染.

Using the official data of the air quality in Qinhuangdao, the distribution of PM2.5 and the main pollutants （CO, NO2, SO2, O3）, have been researched. The results showed that Qinhuangdao city has 119 days slight pollution days in winter, 16 days heavy pollution in winter, NO2 is one of the main pollutants, the peak value of PM2.5 concentration appears in the morning and evening for springtime and summertime, the peak value appears around midnight in autumn and winter. The static stable weather is the necessary condition for the air pollution, the heavy pollution is related to the deep inversion layer of near-surface, when the surface wind speed is within 0-3 m/s, there will be the air pollution.