【作者】 刘玉彻； 赵胡笳； 苏航； 杨洪斌； 邹旭东； 赵凌尘； 张云海； 汪宏宇； 马雁军；

【Author】 Liu Yuche;Zhao Hujia;Su Hang;Yang Hongbin;Zou Xudong;Zhao Lingchen;Zhang Yunhai;Wang Hongyu;Ma Yanjun;Shenyang Institute of Atmospheric Environment,China Meteorological Administration;Shenyang Central Meteorological Station;Liaoning Meteorological Equipment Support Center;

【机构】 中国气象局沈阳大气环境研究所； 沈阳中心气象台； 辽宁省气象装备保障中心；

【摘要】 根据沈阳空气污染资料分析出年变化、月变化,及2014—2018年重污染天气的六大污染物变化情况,再对重度污染和中度污染的天气绘制后向轨迹图,找出污染的原因。结论得出:1)夏季污染主要是光化学污染; 2) 2018年沈阳的污染程度减轻很多。3) 2014年AQI值和6种污染物都为5年最高,而2018年AQI和6种污染物都较低,可见2018年沈阳的污染程度减轻很多。4)夏季污染不仅和PM_2.5和PM₁₀的浓度有相关性,还和O₃有一定的相关性,主要夏季阳光比较强烈,大气里易发生光化学反应,O₃的污染优为重要,沈阳夏季的污染和O₃浓度有很大的关系。5)沈阳夏季污染主要来自正北方（铁岭）和正南方（辽阳）地区。更多还原

【Abstract】 Based on the data of air pollution in Shenyang,the annual and monthly variations were analyzed,and then the six major pollutants in heavily polluted weather from 2014 to 2018 were drawn. Then the backward trajectory of heavily polluted and moderately polluted weather was found out,and the causes of pollution were found. The conclusions were as follows: 1)Photochemical pollution was the main pollution in summer; 2) In 2018,the pollution degree of Shenyang had been reduced a lot.3) AQI value and six pollutants were the highest in five years in 2014,while AQI and six pollutants were lower in 2018. It could be seen that the pollution degree of Shenyang in 2018 was much reduced. 4) Summer pollution was not only related to the concentration of PM_2.5 and PM₁₀,but also to the concentration of O₃. The main summer sunshine was strong,photochemical reactions were easy to occur in the atmosphere,and the pollution of O₃ was more important. There was a great relationship between the pollution of Shenyang in summer and the concentration of O₃. 5) Summer pollution in Shenyang mainly came from the north（ Tieling） and south（ Liaoyang） areas.更多还原