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针对2015年12月1727日出现的区域性重污染天气过程,根据布设在污染中心邢台市的脉冲偏振激光雷达和地基多通道微波辐射计数据,分析了污染过程中气溶胶消光系数、逆温层、水汽含量等的变化,利用Hysplit模式分析了气团后向轨迹.结果表明:此次重污染天气过程主要受局地气象扩散条件变化所致,稳定的高空大气环流和地面均压场是出现环境重污染事件的背景场,100 m高度上的气团对污染物累积和区域输送起到了主要作用;消光系数与细颗粒物PM2.5质量浓度和水汽压的相关系数分别为0.8622和0.7421,随PM2.5质量浓度和水汽压的升高,消光系数增加明显,由PM2.5质量浓度和水汽压建立的消光系数回归方程(R2=0.8811)可以很好的表征消光系数的实际变化;逆温强度在污染发展阶段达到最大,水汽含量在污染加重阶段达到最大,污染缓解阶段的逆温强度和水汽含量则出现明显的下降.“,”A large scale heavy pollution process occurred from 17 to 27 December 2015 in the eastern china. U-sing the data of micro pulse lidar and microwave radiometer which located in the pollution center of Xingtai City, analyzed the extinction coefficient, inversion layer, moisture content in the process of pollution. The results showed that:Local meteorological conditions change was the main pollution forming source during the process, the background of the heavy environmental pollution event was stable high-altitude atmospheric circulation and ground pressure, air mass at 100 m altitude played a major role on the accumulation and regional transport of pol-lutants;The correlation coefficient between extinction coefficient and PM2. 5 concentration, vapor pressure were 0. 8622, 0. 7421, with the increase of PM2. 5 concentration and vapor pressure, the extinction coefficient in-creased exponentially. Extinction coefficient of PM2. 5 concentration and vapor pressure build regression equation ( R2=0. 8811) could be a good characterization of the actual change. The inversion strength reached the maxi-mum in pollution development stage, the moisture content reached the maximum in pollution aggravation stage, the inversion strength and moisture content was a significant decline in pollution mitigation stage.