综述HUANJINGYUFAZHAN包头市一次强沙尘暴污染特点分析林忠,胡越(内蒙古自治区环境监测总站包头分站,内蒙古包头014010)摘要:通过对包头市2021年3月14-21日发生的一次强沙尘暴过程中的颗粒物浓度、天气形势场、气象参数、卫星遥感资料进行分析,归纳此次沙尘污染过程特点:1.过程影响程度强,持续时间长,影响范围广,属近十年罕见。2.过程包含沙尘形成、发展、回流、叠加第二波沙尘影响、沙尘清除5个阶段。沙尘起源于蒙古国,蒙古气旋及大风为其提供动力条件。3.在沙尘发展阶段,包头市处于严重污染共27h,期间出现PM10与PM2.5同步为首要污染的少见的现象,第二波沙尘影响程度减弱,颗粒物浓度变化与一般沙尘天气过程变化规律一致。关键词:强沙尘暴;沙尘过程;污染特点;气象条件中图分类号:X16文献标识码:A文章编号:2095-672X(2023)03-0093-08DOI.10.16647/j.cnki.cn15-1369/X.2023.03.016AnalysisofpollutioncharacteristicsofastrongduststorminBaotouAnalysisofpollutioncharacteristicsofastrongduststorminBaotouLinZhong,HuYue(InnerMongoliaEnvironmentalMonitoringCenterinBaotouSubbranch,BaotouInnerMongolia014010,China)Abstract:Byanalyzingthepollutantconcentration,weathersituationfield,meteorologicalparameters,andsatel⁃literemotesensingdataduringastrongduststormthatoccurredinBaotouCityfromMarch14to21,2021.Theresultsshowedthat:(1)Theprocessimpactdegreeisstrong,longduration,widerangeofimpact,whichisrareinthelastde⁃cade;(2)Theprocesscontains5stages,whicharedevelopment,reflux,superimposedonthesecondwaveofdustim⁃pact,dustremoval.SandanddustoriginateinMongoliaandarepoweredbyMongoliancyclonesandhighwinds.(3)Duringthedustdevelopmentphase,BaotouCitywasinseverepollutionforatotalof27hours,duringwhichtherewasararephenomenonofPM10andPM2.5synchronizedastheprimarypollution.Thesecondwaveofsandanddustaffectsthedegreeofweakening,andthechangeofparticulateconcentrationisconsistentwiththechangepatternofgeneralsandanddustweatherprocess.Keywords:Strongsandstorm;Sandanddustprocess;Pollutioncharacteristics;Meteorologicalconditions93ZONGSHU环境与发展HUANJINGYUFAZHAN沙尘天气一般包括浮尘、扬沙、沙尘暴、强沙尘暴和特强沙尘暴5种类型[1]。内蒙古地区沙尘多...