承德市臭氧污染特征及其与气象因子的相关性研究  

The Relevance between the Polluton Characteristics of O3and Meteorological Factors in Chengde

作　　者：吕瑞鹤 张进生[2] 薛艳龙 江晓畅 黄凤霞 LüRuihe;Zhang Jinsheng;Xue Yanlong;Jiang Xiaochang;Huang Fengxia(College of Marine Resources&Emoironment,Hebei Normal Unirversity of Science&.Technology,Qinhuangdao 066004,China;State Ervironmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prerventionand Control,College of Enrtironmental Science and Engineering,Nanki University,Tianjin 300350,China;Chengde Inustitute of Enroironmental Science,Chengde 067000,China)

机构地区：[1]河北科技师范学院海洋资源与环境学院,河北秦皇岛066004 [2]南开大学环境科学与工程学院,国家环境保护城市空气颗粒物污染防治重点实验室,天津300350 [3]承德市环境科学研究院,河北承德067000

出　　处：《南开大学学报（自然科学版）》2020年第6期85-91,共7页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：天津市科技计划(18ZXSZSF00160)。

摘　　要：为研究承德市臭氧污染特征及与气象因子相关性,采用2015-2019年承德市5个国控环境空气质量监测站点O3连续小时监测数据和气象数据进行分析研究.结果表明:近5年承德市环境空气O3污染天数均超过100 d,O3年均浓度值从2015年149μg/m^3下降为2019年的126μg/m^3.以臭氧为首要污染物的天数占总污染天数的比重呈现增加趋势,从2015年41.0%发展为2019年46.6%.O3浓度呈现春夏浓度较高,冬季浓度低的典型季节分布特征,夏季O3污染天数范围为101-127 d,并且污染天主要出现在4-9月.O3的日变化曲线呈单峰型分布,午后15:00左右出现峰值,NO2的变化趋势与O3相反,二者的相关系数为-0.50.承德市区O3浓度空间分布呈现出西北高于其它地区的特征,各个监测点O3的高值浓度受到偏南风和偏东风的明显影响.O3浓度与温度呈现正相关,相关系数为0.76,与风速和相对湿度呈现负相关,在风速小于1.8 m/s时,O3浓度值常常高于100μg/m3.The O3 hourly monitoring data of the national atmospheric environment monitoring network system from 2015 to 2019 were analyzed in order to study the relevance between pollution characteristics of O3 and meteorological factor in Chengde. The results show that in recent five years, the pollution days caused by O3 in Chengde was ranging from 103-132, and the average annual concentration of O3 decreased to 126 μg/m^3 in 2019 from 149 μg/m^3 in 2015. As the primary pollutant, the proportion of pollution days caused by O3 in all pollution days has increased over the past five years, and it has developed from 41.0% in 2015 to 46.4% in 2019. The pollution of O3 in Chengde showed obvious seasonal change with the higher O3 concentrations in summer and lower values in winter, the pollution days ranged from101 to 127 and mainly concentrated in April to September. The diurnal variation of O3 concentration shows an obvious single-peak distribution around 15: 00, The O3 concentration has a negative correlation with NO2, with the correlation coefficient of-0.50. The spatial distribution of O3 pollution is characteristic by high O3 concentration in the northeast and low O3 concentrations in the center city, and the high concentration of monitor sites were significantly impacted by east and south wind direction. Research on the relevance between O3 and meteorological factors shows that O3 is positively correlated with temperature, with the significant relevance of 0.76, moderate correlated with relative humidity and air pressure. High temperature and low relative humidity are beneficial to the O3 formation, and the higher O3 concentration usually occurs with wind speed lower than 1.8 m/s.

关 键 词：臭氧 承德 污染特征 气象因子 

分 类 号：X512[环境科学与工程—环境工程]