2015年采暖季沈阳市一次空气重污染的过程分析  

作　　者：张丽辉[1] 王闯[1] 王帅[1] 刘闽[1] 王佳音[1] 

机构地区：[1]沈阳市环境监测中心站,辽宁沈阳110015

出　　处：《环境保护与循环经济》2017年第4期59-61,65,共4页environmental protection and circular economy

摘　　要：以沈阳市为研究区域,结合气象资料和激光雷达监测结果,研究了2015年1月的一次重污染天气过程,重点分析此次污染过程中沈阳市天气形势、气象条件和污染物浓度的变化特征。结果表明,本次重污染过程发生主要是由于近地面受弱气压场控制,大气层结稳定,不利于污染物扩散,污染过程具有污染物累积速度快、污染物浓度峰值高等特点;根据气象资料和激光雷达监测结果分析,重污染过程中PM_(10)浓度可能受外来沙尘影响,本次重污染过程结束主要是受垂直扩散条件改善影响。This paper studied a heavy pollution weather process in Shenyang city January 2015, according to the laser radar monitoring results and meteorological data. This paper analyzed the weather situation, the meteorological condition and the change characteristics of pollutant concentration of this pollution process. Results show that the heavy pollution occurs mainly due to the near ground are controlled by weak pressure field, the atmosphere and stability, prevent pollutants diffusion. The pollution process had the characteristics of the poUutants high accumulation speed and the high peak concentration. According to the meteorological data and laser radar monitoring result analysis, in the process of the heavy pollution the PM10 concentration may be affected by the external dust, and the heavy pollution process ended that is mainly affected by the vertical diffusion conditions improving.

关 键 词：空气重污染 天气形势 PM2.5浓度 激光雷达 

分 类 号：X51[环境科学与工程—环境工程]