吉林省2015~2017年臭氧污染特征及成因分析  

Pollution characteristics and source analysis of ozone from 2015 to 2017 in Jilin Province

作　　者：杨成江 张萌铎 王晓红 于洋 陈学伟 陈卫卫[2,3] 鲍秋阳 YANG Chengjiang;ZHANG Mengduo;WANG Xiaohong;YU Yang;CHEN Xuewei;CHEN Weiwei;BAO Qiuyang(Jilin Provincial Ecological Environment Monitoring Center,Changchun 130012,China;Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun 130102,China;University of Chinese Academy of Sciences,Beijing 100049,China;Changyi Branch of Jilin Provincial Ecological Environment Department,Changchun 132000,China;Jilin Provincial Academy of Environmental Sciences,Changchun 130102,China)

机构地区：[1]吉林省生态环境监测中心,吉林长春130012 [2]中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室,吉林长春130102 [3]中国科学院大学,北京100049 [4]吉林省生态环境局昌邑区分局,吉林吉林132000 [5]吉林省环境科学研究院,吉林长春130012

出　　处：《环境保护科学》2022年第4期95-102,共8页Environmental Protection Science

基　　金：国家重点研发计划项目(2017YFC0212303);国家自然科学基金资助项目(41775116);中国科学院前沿科学重点研究项目(QYZDB-SSW-DQC045);中国科学院青年创新促进会项目(2017275);中国科学院东北地理与农业生态研究所“一三五”培育项目(IGA-135-05)。

摘　　要：基于吉林省2015~2017年32个国控站点逐小时的近地面臭氧(O_(3))和气象在线监测数据,研究了该地区9地市O_(3)污染的年际变化、时空特征、气象影响和来源传输。结果表明,2015~2017年吉林省9城市O_(3)日最大8小时滑动浓度(简称MDA8)第90%分位呈显著上升趋势;高O_(3)浓度(O_(3)MDA8浓度>160μg/m_(3))主要分布在以“四平-长春-吉林”为中心城市的水平条带上,并逐步向周围其他城市扩展和递减;O_(3)季节变化呈单峰型,峰值浓度出现在5~8月。在研究时段内,采暖季的大气O_(3)浓度明显低于非采暖季,但其浓度呈持续上升趋势,这可能与燃煤、机动车排放和灰霾天气改善有关;当风速为2~6 m/s,风向为正南和东南方向时,各监测站点O_(3)污染较为严重,表明除本地化学反应生成外,来自各地监测点位正南和东南方向的外来传输也会提高本地大气O_(3)浓度。Based on the online ozone monitoring and meteorological data obtained from 32 state control sites in Jilin Province from 2015 to 2017,the interannual variation,spatiotemporal characteristics,meteorological factors and regional transport of ground-level ozone(O_(3))pollution were analyzed.The results indicated that the ozone MDA8 concentration of 8 cities in Jilin Province increased significantly during 2015~2017.The most polluted regions(O_(3)MDA8 concentration>160μg/m^(3))were concentrated in the“Siping-Changchun-Jilin”city belt and the surrounding cities.The annual O_(3)variation showed a“single-peak”pattern with concentration peak from May to August.The ozone concentration in the non-heating period was significantly higher than that in the heating period.In the heating period,the ozone concentration from 2015 to 2017 was significantly increased,indicating the emission from the coal burning and road vehicles.For all stations,the O_(3)concentration was higher under the southeasterly and southerly wind with the speed of 2~6 m/s,indicating that the external transport from other cities enhanced the local O_(3)concentration.

关 键 词：大气污染 近地面臭氧 时空特征 主成分分析 吉林省 

分 类 号：X51[环境科学与工程—环境工程]