西安第十四届全国运动会及残特奥会前后PM_(2.5)溯源研究  

Traceability study of PM_(2.5) before,during and after the14th National Games of the People′s Republic of China & theNational Games for Persons with Disabilities in Xi′an City

作　　者：李香凝 王羽琴 高燕 王竞铮 臧汇宇 谢林花 LI Xiang-ning;WANG Yu-qin;GAO Yan;WANG Jing-zheng;ZANG Hui-yu;XIE Lin-hua(School of Environmental Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China;Longi Green Energy Photovoltaic Technology(Xixian New Area)Co.,Ltd.,Xi′an 710021,China)

机构地区：[1]陕西科技大学环境科学与工程学院,陕西西安710021 [2]隆基绿能光伏科技(西咸新区)有限公司,陕西西安710021

出　　处：《陕西科技大学学报》2024年第3期27-37,45,共12页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅自然科学基础研究计划项目(2022JM-076)。

摘　　要：基于2021年9月~11月西安市环境空气质量监测数据,分析十四运会及残特奥会前中后期西安市区域PM_(2.5)的污染特征,利用HYSPLIT模型、潜在源贡献因子法(PSCF)和权重浓度轨迹法(CWT)确定气团输送路径、潜在源区及其对PM_(2.5)质量浓度的贡献.结果表明:研究期间西安市以东南风为主导,PM_(2.5)浓度在十四运会期间最低,残特奥会结束后最高.PM_(2.5)的气团输送路径以陕南附近的本地输送、偏东和偏南方向的近距离输送以及西北方向的远距离输送为主.PM_(2.5)的潜在源区主要分布在河南湖北、贵州四川重庆、新疆内蒙地区以及陕南各城市及周边省份交界处.Based on the ambient air quality monitoring data of Xi′an from September to November in 2021,the pollution characteristics of regional PM_(2.5) in Xi′an before,during and after the 14th National Games of the People′s Republic of China&the National Games for Persons with Disabilities were analysed.In addition,the air mass transport pathways,potential source areas and their contributions to PM_(2.5) mass concentrations were also determined by the Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)model,potential source contributing factor(PSCF)method and weighted concentration trajectory(CWT)method.The results showed that during the observation,Southeasterly winds dominated in Xi′an,and the PM_(2.5) concentration was lowest during the 14th National Games of the People′s Republic of China(NG)and highest after the end of the National Games for Persons with Disabilities(PG).The air mass transport pathways of PM_(2.5) were dominated by the local transport near Southern Shaanxi,the proximity transport in the Easterly and Southerly directions,and the long-range transport in the Northwesterly direction.Potential source regions of PM_(2.5) were mainly located in the cities and areas of Henan,Hubei,Guizhou,Sichuan,Chongqing,Xinjiang Uygur Autonomous Regions,Inner Mongolia Autonomous Region,Southern Shaanxi,and the junction of cities in Southern Shaanxi and neighboring provinces.

关 键 词：十四运 细颗粒物 后向轨迹 潜在源分析 浓度权重分析 

分 类 号：X513[环境科学与工程—环境工程]