摘要
近年来,城市环境空气中臭氧污染越来越显现,成为影响城市环境空气质量主要因子,环境空气中臭氧浓度变化受光照、温度、湿度等气象条件、本地源排放、环境容量等多因素影响,同时受空气中热力、动力、化学及物理变化影响,其变化过程是关联且复杂的,难以实现精准解析和探测。采样差分吸收激光雷达探测法,充分利用差分吸收激光雷达具备的高时空分辨率、高测量精度等特点,计算不同高度层均值差异,开展了安阳市一个完整夏季臭氧高发季节的本地监测活动并将雷达监测结果及实际数据情况进行对比,对比结果表明城市不同环境空气质量条件下臭氧垂直分布结构较为不同,且300~800m为臭氧浓度的较不稳定区。该方法创新了臭氧激光雷达观测监测技术在大气污染防治中的解析应用,摸索出了差分吸收激光雷达与城市环境空气质量监测集合应用解析的新方法,找出了安阳市城市环境空气臭氧垂直时空分布结构特征,为安阳市城市环境空气臭氧精准防与控提供了技术支撑。
In recent years,ozone pollution in urban ambient air has become more and more obvious,and has become the main factor affecting urban ambient air quality.The change of ozone concentration in ambient air is affected by various factors such as light,temperature,humidity and other meteorological conditions,local source emissions,and environmental capacity.At the same time,it is affected by thermal,dynamic,chemical and physical changes in the air.The change process is related and complex,and it is dfficult to achieve accurate analysis and detection.The sampling differential absorption lidar detection method,which takes full advantage of the high temporal and spatial resolution and high measurement accuracy of differential absorption lidar to calculate the mean difference at different altitudes,was adopted in this paper,and the local monitoring activities were carried out for a complete summer ozone high season in Anyang City.The radar monitoring results were compared with the actual data.The comparison results showed that the vertical distribution structure of ozone was different under different ambient air quality conditions in the city,and 300-800m is the less stable area of ozone concentration.This method innovated the analytical application of ozone lidar observation and monitoring technology in the prevention and control of air pollution,explored a new method for the integrated application and analysis of differential absorption lidar and urban ambient air quality monitoring,and found out the vertical spatial and temporal distribution structure of urban ambient air ozone in Anyang City,and could provide technical support for the precise prevention and control of urban ambient air ozone in Anyang City.
作者
王兵
徐敏
黄小兰
唐敏
WANG Bing;XU Min;HUANG Xiao-lan;TANG Min(Henan Anyang Ecological Environmental Monitoring Center,Anyang,Henan 455000,China;Hebei Zhou Qing Enwironmental Protection Technology Co.,Baoding,Hebei 071000,China)
出处
《四川环境》
2023年第4期113-120,共8页
Sichuan Environment
关键词
环境空气
臭氧
垂直分布
结构特征
Ambient air
ozone
vertical distribution
structural features
