基于后向轨迹的2020年承德市大气细颗粒物潜在来源分析  

Analysis of Fine Particle Matters Potential Source Contribution in Chengde 2020 Based on Backward Trajectory

作　　者：马瑶 吕瑞鹤 李陆杨 薛艳龙 张进生[3] 王丹 Ma Yao;Lv Ruihe;Li Luyang;Xue Yanlong;Zhang Jinsheng;Wang Dan(Qinhuangdao Key Laboratory of Marine Habitat and Resources,Hebei Key Laboratory of Ocean Dynamics,Resources and Environments,College of Marine Resources&Environment,Hebei Normal University of Science&Technology,Hebei,066004;Chengde Institute of Environmental Science,Hebei,067000;State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control,College of Environmental Science and Engineering,Nankai University,Tianjin,300350)

机构地区：[1]河北科技师范学院海洋资源与环境学院、河北省海洋动力过程与资源环境重点实验室、秦皇岛市海洋生境与资源重点实验室,河北066004 [2]承德市环境科学研究院,河北067000 [3]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

出　　处：《当代化工研究》2025年第4期96-99,共4页Modern Chemical Research

基　　金：河北省自然科学基金“渤海沿岸典型地区霾天高浓度大气颗粒物污染特征与成因”(项目编号:B2022407001);河北省自然科学基金“板块俯冲下的岩浆演化及其对深海热液成矿的制约”(项目编号:D2021407001)。

摘　　要：使用拉格朗日混合单粒子轨道模型(HYSPLIT)和NCEP气象再分析资料(2020年3月1日至2021年2月28日),计算分析了不同季节抵达承德市的气流后向轨迹,并进行了聚类分析,以确定影响承德市的主要气团来源。研究还基于承德市空气污染物(PM_(2.5)、PM_(10)、SO_(2)、CO、NO_(2)、O_(3))的监测数据,探讨了PM_(2.5)的污染特征。此外,通过潜在源贡献因子法(PSCF),进一步分析了不同季节承德市环境空气中PM_(2.5)污染的潜在源区及其贡献。结果表明,承德市全年环境空气质量较好,SO_(2)和NO_(2)质量浓度的比值全年较低,显示出典型的非煤烟型污染特征。后向轨迹聚类结果显示,春、秋、冬季主要受西北地区长距离跨境气团的影响,夏季则显著受京津冀地区和环渤海区域气团的影响,同时渤海海洋气流也是夏季的主要影响源。PSCF分析指出,京津冀地区是承德市PM_(2.5)的主要潜在源区,且具有明显的季节性差异。秋冬季源区相比春夏季更为广泛,向西和东延伸。此外,山西、河南、山东、环渤海地区和海洋气溶胶的贡献也较为显著。The seasonal backward trajectories of airflows arriving in Chengde City were alculated and analyzed by utilizing the hybrid sin-gle-particle Lagrangian integrated trajectory(HYSPLIT)model and NCEP meteorological reanalysis data(March 1,2020 to February 28,2021).A cluster analysis was conducted to identify the main air mass sources influencing Chengde City.Based on air pollutant monitoring data(PM_(2.5),PM₁₀,SO_(2),CO,NO_(2)and O_(3))from Chengde,the pollution characteristics of PM_(2.5)were further investigated.Moreover,the potential source contribution function(PSCF)method was applied to analyze the potential source regions and their contributions to PM_(2.5)pollution in Chengde during different seasons.The results indicate that the overall air quality in Chengde was relatively good throughout the year,with a low ratio of mass concentration of SO₂and NO₂,indicative of typical non-coal-burning pollution characteristics.The backward trajectory clustering revealed that in spring,autumn,and winter,Chengde was primarily influenced by long-distance transboundary air masses from the northwest,while in summer,the city was signifi-cantly affected by air masses from the Beijing-Tianjin-Hebei region,the Bohai Rim area,and marine airflows from the Bohai Sea.The PSCF analysis identified the Beijing-Tianjin-Hebei region as the primary potential source region of PM_(2.5)in Chengde,with notable seasonal variations.In autumn and winter,the source regions extended further westward and eastward compared to spring and summer.Additionally,contributions from Shanxi,Henan,Shandong,the Bohai Rim region,and marine aerosols were also significant.

关 键 词：PM_(2.5) 承德市 后向轨迹聚类 潜在源区分析 

分 类 号：X512[环境科学与工程—环境工程]