孝感春节期间空气质量与气象条件的关系

Relationship Between Air Quality and Meteorological Conditions during Spring Festival in Xiaogan

利用2015—2017年春节逐时的孝感、武汉、随州环境监测站空气质量监测数据,孝感市地面气象观测站日、时气象要素,地面天气图、高空天气图及武汉探空数据。孝感春节期间气压、气温的变化对空气质量的影响不是很显著,中层的逆温对污染物的扩散影响不明显;近地层的逆温如果是由中层暖湿气流和低层降水共同影响造成的,降水对空气污染物的清除作用更显著;近地层的逆温如果是由于晴空辐射造成的,逆温将极不利于空气污染物的稀释、扩散和清除。

This paper uses the hourly monitoring data of Xiaogan,Wuhan and Suizhou environmental monitoring stations during the Spring Festival 2015~2017,the weather elements of the ground meteorological observation station,the ground weather map,the high altitude weather map and the Wuhan sounding data.The air pressure and temperature change in Xiaogan Spring Festival have no significant influence on air quality,and the adverse temperature in the middle layer has no obvious influence on the diffusion of pollutants;If the inversion temperature in the near stratum is caused by the middle warm and wet air flow and the low layer precipitation,the precipitation has a more significant effect on the removal of air pollutants;If the inversion temperature in the near stratum is caused by the radiation of the clear air,the inversion temperature will be very unfavorable to the dilution,diffusion and removal of air pollutants.