北京市臭氧污染特征及影响因素分析  

Characteristics and influencing factors of ozone pollution in Beijing

作　　者：周刚[1,2] 尹文君 晋程绣 鞠东 王国兴 张梦瑶 陈郁 王凌 ZHOU Gang;YIN Wen-jun;JIN Cheng-xiu;JU Dong;WANG Guo-xing;ZHANG Meng-yao;CHEN Yu;WANG Ling(Department of Automation,Tsinghua University,Beijing 100084,China;Beijing Insights Value Technology Co.,Ltd.,Beijing 100070,China;Beijing Fengtai Ecology and Environment Bureau,Beijing 100071,China)

机构地区：[1]清华大学自动化系,北京100084 [2]北京英视睿达科技股份有限公司,北京100070 [3]北京市丰台区生态环境局,北京100071

出　　处：《环境生态学》2025年第1期148-154,174,共8页Environmental Ecology

摘　　要：本研究基于2023年7月21日—8月21日北京市气象监测资料、北京市生态环境局33个大气监测站点的臭氧(O_(3))数据,分析研究期间北京市O_(3)污染特征,并讨论O_(3)生成的影响因素。结果表明:研究期间,北京市城区的O_(3)浓度较高,污染持续时间更长,而郊区相对浓度较低;O_(3)污染过程中,O_(3)浓度与NO_(2)浓度变化的相关系数为负值;当环境温度介于29~32℃、相对湿度介于25%~60%时,O_(3)超标概率会大幅升高;随着日最高温度增加,O_(3)浓度水平的升高趋势逐渐减慢,O_(3)浓度与日最高辐射量呈现显著的正相关关系。距地面越高,后向轨迹气团的传输距离越长,在100 m、500 m和1000 m高度上,北京市O_(3)污染物的主要传输方向来自京津冀南部和东南部。This study utilizes meteorological monitoring data collected from July 21 to August 21,2023,in Beijing,alongside ozone(O_(3))data from 33 atmospheric monitoring stations managed by the Beijing Environmental Protection and Ecological Environment Bureau.It examines the characteristics of O_(3) pollution in Beijing during this period and discusses the influencing factors of O_(3) generation.The results indicated that during the study period,O_(3) concentrations in Beijing s urban areas were higher with longer durations of pollution,whereas suburban concentrations were comparatively lower;Throughout the O_(3) pollution episodes,variations in O_(3) concentration negatively correlated with NO_(2) concentration;The probability of O_(3) exceeding acceptable standards significantly increases when the ambient temperature ranges from 29℃to 32℃and the relative humidity ranges from 25%to 60%;As the daily maximum temperature rises,the increasing trend of O_(3) concentration levels gradually decelerates,and a significant positive correlation is observed between O_(3) concentration and daily maximum radiation.The higher above ground,the greater the transport distance of the air mass following a backward trajectory.At heights of 100 m,500 m,and 1000 m,the primary source of O_(3) pollutants in Beijing is from the southern and southeastern parts of the Beijing-Tianjin-Hebei region.

关 键 词：臭氧污染 气象要素 主成分分析 轨迹聚类 

分 类 号：X515[环境科学与工程—环境工程]