2022年贵港市臭氧潜在源区及传输路径季节特点分析  

Analysis of the seasonal characteristics of potential ozone source areas and transmission pathways in Guigang in 2022

作　　者：黄巾旗 廖国莲 黄子航 零绍珑 王盛繁 HUANG Jiqi;LIAO Guolian;HUANG Zihang;LING Shaolong;WANG Shengfan(Guigang Meteorological Bureau,Guangxi Guigang 537100,China;Guangxi Meteorological Observatory,Nanning 530022,China;Guangxi Institute of meteorological Sciences,Nanning 530022,China)

机构地区：[1]贵港市气象局,广西贵港537100 [2]广西壮族自治区气象台,南宁530022 [3]广西壮族自治区气象科学研究所,南宁530022

出　　处：《气象研究与应用》2024年第3期117-121,共5页Journal of Meteorological Research and Application

基　　金：广西气象科研计划项目(桂气科2020Z04、桂气科2024M23);中国气象局预报员专项项目(CMAYBY2020-097);广西气象局创新团队项目。

摘　　要：为了揭示贵港市2022年臭氧(O3)不同季节的传输规律和污染来源,利用Meteo Info软件后向轨迹模式,结合O3小时浓度数据,对2022年贵港市各季节500 m高度逐日72 h后向轨迹进行深入分析,并使用潜在源区贡献分析法(PSCF)和浓度权重轨迹分析法(CWT)对贵港市O3的潜在贡献源区和贡献大小进行研究。结果表明:(1)贵港市各季节近地层大气污染输送以长距离输送为主,东北方向的长距离输送对O3浓度影响最大。(2)河南、湖北、湖南及广西贵港周边地区是主要的O3潜在源区,秋季的潜在源区范围最广。(3)贵港市O3污染来源为区域传输和本地排放,区域传输以河南、湖北、江西、湖南的贡献较大,本地污染受贵港北部影响较显著。To reveal the transmission patterns and pollution sources of Ozone(O3)in Guigang City in different seasons of 2022,this study uses the MeteoInfo backward trajectory mode,combined with the hourly concentration data of O3,to conduct an in-depth analysis of the daily 72-hour backward trajectories at a height of 500 m for each season in Guigang City in 2022.The Potential Source Contribution Function(PSCF)analysis method and Concentration Weighted Trajectory(CWT)analysis method are used to identify the potential contribution source area and contribution size of O3.The results show that:(1)the near-surface atmospheric pollution transport in Guigang in different seasons is dominated by long-distance transport,and the long-distance transport in the north-east direction has the greatest impact on O3 pollution concentration.(2)Henan,Hubei,Hunan,and Guangxi Guigang and its surrounding areas are the main potential source areas of O3,with the widest range of potential source area in autumn.(3)The sources of O3 pollution in Guigang City are regional transport and local emissions,with regional transport contributing more from Henan,Hubei,Jiangxi and Hunan,and local pollution being more significantly affected by northern Guigang.

关 键 词：O3 后向轨迹 聚类分析 潜在源贡献因子 浓度权重轨迹 

分 类 号：P49[天文地球—大气科学及气象学]