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...
