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安徽省臭氧污染特征及气象影响因素分析
引用本文:董昊,程龙,王含月,赵旭辉,朱余.安徽省臭氧污染特征及气象影响因素分析[J].中国环境监测,2021,37(1):58-68.
作者姓名:董昊  程龙  王含月  赵旭辉  朱余
作者单位:安徽省生态环境监测中心, 安徽 合肥 230071
基金项目:国家重点研发计划(2018YFC0213800)
摘    要:基于2016—2018年安徽省68个国控环境空气质量自动监测站点的臭氧(O_3)监测数据,研究分析了安徽省O_3污染特征及其与气象因子的相关性。结果表明:安徽省O_3污染程度呈现逐年加重趋势,并有显著的季节和月度变化特征。2016—2018年,各年度单月O_3日最大8小时滑动平均质量浓度第90百分位数的最大值分别出现在9月、5月、6月。O_3日变化趋势为典型的单峰形,各年度最低值出现在晨间07:00左右,最高值则是在15:00—16:00。全省O_3浓度总体上呈现出北高南低的空间特征。温度、相对湿度与O_3浓度分别呈现显著正相关、负相关,但在不同季节存在一定差异,其中,春秋季温度与O_3浓度的相关性好于夏冬季,夏季相对湿度与O_3浓度的相关性最为显著。O_3浓度在平均风速为2.1~2.2 m/s时更易出现超标。中部和北部城市在东南风的作用下易出现O_3超标并达到O_3浓度高值,而南部地区在风向为西风时更容易出现O_3超标。

关 键 词:安徽省  臭氧  污染特征  气象因子  聚类分析
收稿时间:2019/12/10 0:00:00
修稿时间:2020/6/20 0:00:00

Analysis of Ozone Pollution Characteristics and Meteorological Factors in Anhui Province
DONG Hao,CHENG Long,WANG Hanyue,ZHAO Xuhui,ZHU Yu.Analysis of Ozone Pollution Characteristics and Meteorological Factors in Anhui Province[J].Environmental Monitoring in China,2021,37(1):58-68.
Authors:DONG Hao  CHENG Long  WANG Hanyue  ZHAO Xuhui  ZHU Yu
Institution:Anhui Ecological Environment Monitoring Center, Hefei 230071, China
Abstract:Based on the ozone monitoring data obtained from 68 automatic air quality monitoring stations in Anhui Province during 2016-2018,the ozone pollution characteristics and correlation with meteorological factors were analyzed.Results showed that the ozone concentration was increasing annually,and had significant seasonal and monthly variations.The highest value of 90th percentile concentration of daily maximum 8 h ozone moving averages from 2016 to 2018 was generally seen in September,May and June,respectively.The diurnal variation of ozone concentration showed a single peak distribution,with the lowest value at 07:00 in the morning and the highest value at between 15:00 and 16:00 in the afternoon.The ozone concentration around cities showed the spatial characteristics of high in the north and low in the south.The ozone concentration of different regions showed significant positive correlation with temperature,and negative correlation with relative humidity.In different seasons,the correlation between relative humidity and ozone was most significant in summer,while temperature in spring and autumn.Ozone concentration was easier to exceed the standard when the wind speed was 2.1-2.2 m/s.Under the action of the southeast wind,the ozone concentration of cities in the north-central was easier to exceed the standard and reached high values,while the ozone concentration of cities in the southern regions exceeded the standard was mainly concentrated in the westerly wind direction.
Keywords:Anhui Province  ozone  pollution characteristic  meteorological factor  clustering analysis
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