晋城市大气污染特征和 PM_2.5 潜在源研究

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文章编号：1674-6139（2026）02-0098-06

中图分类号：X511文献标志码：B

Analysis of Atmospheric Pollution Characteristics and Potential Sources of PM2.5 in Jincheng City

Zhao Jun，MaXiaoling，Liu Qiangjun，ChangMinyan，LiRuoyu（JinchengMeteorological Bureau，JinchengO48OoO，China）

Abstract：UsingambientairqualitymonitoringdataanddatafromtheNationalCentersforEnvironmentalPrediction，astudywas conducted on the characteristics of atmospheric pollution， PM2.5 transport paths，and potential source areas in Jincheng City from 2017 to 2021throughbacktrajectorycusteringalysis，otentialSourceContributioFunctionndConcentrationWeightedrajeoal sis.Theresultsindicatedthat：TheproportionofdayswithgoodairqualityinJinchengCitygenerallyshowedanupwardtrendyearby year，withparticulateplutantsandozonepllutantsbeingthemainatmosphericputantsTheprevailingnearsurfacewinddirections were northerly and southerly winds，under which PM2.5 pollution was prone to occur.The transport directions of PM2.5 were northwestward，northerlyndstwardwithteorerlyetioningteprimaryrasportathayThreereteaiotetialource regions for PM2，5 polution，namely，northwest China，Shaanxi Provinceand southwest China，andtheareas surrounding Jincheng City.

Keywords：Jincheng; PM2.5 ；backward trajectory；clustering analysis；potential source region

前言

PM2.5 是影响城市空气质量的首要污染物，也是影响人体健康、大气能见度以及地球辐射平衡的重要污染物[1]。（剩余5969字）