石家庄市持续重污染特征及污染传输研究

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文章编号：1674-6139（2026）02-0043-06

中图分类号：X511文献标志码：B

Pollution Characteristics and Air Pollutant Transport Channels in Shijiazhuang during Heavy Pollution Period

Qian Weimiao，Han Juncai，Ren Gaisha，Liu Xiaotong，Yang Shanshan

（1.Shijiazhuang Meteorological Bureau，Shijiazhuang O5o081，China;

2.Hebei Provincial KeyLaboratoryof Meteorologyand Ecological Environment，Shijiazhuang O5oo21，China; 3.Hebei School of Economics and Management，Shijiazhuang O50073，China）

Abstract：Basedon7avpolutionproceesinSjazuangfrom213to2，HPLodelandcusteringanalysis，ehted potentialourcecontributionfunction（WPSCF）ndweightedconcentrationweightedtrajectoryWCW）wereappliedtoanalyehebackwardtrajectoresofeavypltioandmainpoltiosourceareasThsultseasfolows：Teaypoltionprocesseocetrat edfromOctobertoFebruaryextearParticlepolutants’oncentrationshowedvidentdualvariationwithuimodaldistributioinhot seasons，bimodaldistrbutioincoldsasoselutanttrasporthaelsearthegroudfeaturdbyortdistace，sloiflowih spiral steering，andtheshort distancepathwaywith tractpoints distributed in Hebeioradjacentprovincesaccounted for 54% to93 % .The heavypolutiodoaegosilsgsddsieddenlsing ingtothedailyationofplutantsoncentratioesides，tethardastwardndouthestwesttrasportpathseea transportaelsoespodingtboeapliprosesTeerticaldistrbutioofplltanttasportcaelsohatte highest percentages of trajectories were 39.3% （below 500m ）and 34% （above 1000m but below 3000m ）.The main pollution source areas of Shijiazhuang which locatedin the middle and southern parts of Hebei and the surrounding area were small.

Keywords：heavy pollution；backward trajectory；potential source contribution function（PSCF）；concentration-weighted trajectory （CWT）；Shijiazhuang

前言

北京、天津、石家庄市等28个城市为京津冀大气污染传输通道城市（即“ 2+26" 城市），作为重污染天气主要城市群，京津冀地区重污染过程的预报预警对污染联防联控，加强多污染物协同治理，推进空气质量持续改善有重要指导意义[1-2]

由于短时间内污染物排放相对稳定，天气背景是影响污染物扩散的主要条件，大气污染输送导致污染物浓度迅速升高，形成重污染，近地面 PM2.5 浓度增长机制与气象条件关系密切[3]。（剩余4726字）