摘要
针对日益严重的臭氧污染问题,利用绍兴市3个国控监测站点2016—2018年的监测数据,对绍兴市臭氧污染的时空分布特征进行研究,并综合考量温度、湿度、风向、风力等气象因素的影响。结果表明,绍兴市2017年臭氧最高时均质量浓度为355μg/m^3,显著高于2016年(267μg/m^3)。臭氧日浓度曲线呈单峰型特征,峰值出现于14:00左右,谷值出现于6:00左右。2016年夏季臭氧浓度最高,而2017年与2018年春季臭氧浓度最高。臭氧高值首次出现日期提前与温度有关。气象因素上,温度≥30℃,40%≤相对湿度<70%,风向为东北风时,绍兴市更易出现臭氧高值。2018年绍兴市西南部臭氧浓度峰值显著低于其他区域,可能是NOx等污染物减排后传输作用变化所致。
Aiming at the problem of increasingly serious ozone pollution,the monitoring data of three national monitoring stations in Shaoxing from 2016 to 2018 was used to study the time and spatial distribution characteristics of ozone pollution in Shaoxing.The effects of temperature,humidity,wind direction,wind power on ozone concentration were analyzed.The results showed that the highest ozone concentration of Shaoxing in 2017 was 355μg/m^3,which was significantly higher than the peak value of 267μg/m^3 in 2016.Ozone diurnal variation showed single-peak type,the peak hour appeared at 14:00 and the bottom value hour appeared at 6:00.The summer of 2016 and the spring of 2017 and 2018 were the seasons with the highest ozone concentration in the year.The advance of the first date of high ozone concentration value was related to the changes in temperature.Temperature≥30℃,40%≤relative humidity<70%,wind direction of northeast wind were prone to high ozone values in Shaoxing.In 2018,the peak concentration of ozone in the southwest was significantly lower than that in the other directions.After investigation and analysis,it might be caused by changes in the transmission of pollutants such as NOx.
作者
孙国金
朱绍东
李优楠
何奕
施耀
SUN Guojin;ZHU Shaodong;LI Younan;HE Yi;SHI Yao(Shaoxing Ecology and Environment Bureau,Shaoxing Zhejiang 312000;Radiation Environment Monitoring Station of Zhejiang Province,Hangzhou Zhejiang 310015;Shaoxing Environmental Monitoring Centre,Shaoxing Zhejiang 312000;Industrial Ecology and Environment Research Institute,Zhejiang University,Hangzhou Zhejiang 310027)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第5期608-613,共6页
Environmental Pollution & Control
关键词
绍兴市
臭氧
污染特征
气象因素
Shaoxing
ozone
pollution characteristics
meteorological factors
