沈阳市臭氧浓度时空分布与变化特征分析

臭氧是城市中光化学烟雾的主要成分,随着城市的发展和机动车的增加,光化学烟雾成为了影响城市环境空气质量的重要因素。利用2016年沈阳市的臭氧浓度监测小时值,以及臭氧前体物(NOX,CO)浓度的小时值,对臭氧的空间分布、时间分布和变化特征进行了分析。分析结果显示,臭氧浓度呈现出明显的日变化规律,臭氧浓度分别与氮氧化物浓度和一氧化碳浓度日变化呈现出负相关,臭氧浓度和温度日变化呈现正相关。

Ozone is the main component of photochemical smog in cities.With the development of cities and the increase of motor vehicles,photochemical smog has become an important factor affecting the air quality of urban environment.The spatial distribution,time distribution and variation characteristics of ozone were analyzed by using the hourly values of ozone concentration monitoring in Shenyang in2016and the hourly values of ozone precursors(NOX,CO).The results showed that ozone concentration showed an obvious diurnal variation,and the diurnal variation of nitrogen oxides concentration and carbon monoxide concentration showed negative correlation with ozone concentration,positive correlation between ozone concentration and temperature change.