《干旱气象》51篇论文入选...引、高下载、高PSCI论文

《《干旱气象》51篇论文入选...引、高下载、高PSCI论文》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、第1期陈荣等：银川市大气边界层逆温影响因素及其与冬季PM2.5的关系131InfluencefactorsofatmosphericboundarylayerinversioninYinchuanCityandtherelationwithPM2.5inwinter1，21，31，41，21，21，2CHENRong，WANGJianying，YANGWenjun，CHENMin，WANGQian，LIKun（1.KeyLaboratoryforMeteorologicalDisasterMonitoringandEarlyWarn

2、ingandRiskManagementofCharacteristicAgricultureinAridRegions，CMA，KeyLaboratoryofMeteorologicalDisasterPreventingandReducingofNingxia，Yinchuan750002，China；2.YinchuanMeteorologicalBureauofNingxia，Yinchuan750002，China；3.NingxiaMeteorologicalServiceCenter，Yinchuan750002，Ch

3、ina；4.HelanMeteorologicalStationofNingxia，Helan750200，China）Abstract：InordertoexplorethecharacteristicsandinfluencefactorsofatmosphericboundarylayerinversioninYinchuanCityandtheirrelationshipwithwinterPMpollution,basedonthesoundingandsurfacemeteorologicalobservationdat

4、aatYinchuanmeteoro⁃2.5logicalstationandtheairqualitymonitoringdatainYinchuanCityfrom2015to2020,thecharacteristicsofatmosphericboundarylayerinversionandsurfacemeteorologicalelementsareanalyzed.Andonthisbasisthattheinfluenceofinversionandsurfacemeteoro⁃logicalelementsonP

5、Mpollutionweathersinwinterisexplored.Theresultsareasfollows:(1)Theinversionsinatmosphericbound⁃2.5arylayeraremoreeasilytooccurintheearlymorningthanintheeveninginYinchuanCity,andmostoftheinversionsaregroundin⁃versions,theyarestrongerandthinnerthansuspensioninversions.Th

6、einversionfrequencyandthicknessarethelargestinwinterandthesmallestinsummer,whiletheinversionintensityisthestrongestinautumnandtheweakestinsummer.(2)Inwinter,theinversionsareeasilytooccuronasunnydaywithaveragesurfacewindspeedfrom1.0to1.5m·s-1andrelativehumidityfrom30%to

7、60%.(3)GroundinversionisoneofthemainmeteorologicalfactorsaffectingPMpollutionweathersinwinter.Whentheinversionthicknessex⁃2.5ceeds596mandtheintensityexceeds1.4℃·(100m)-1,PMpollutionweathersareeasilytooccur,andthepollutionisaggravated2.5withtheincreaseofinversionthickne

8、ssandintensity.(4)UnderPMpollutionweathersinwinter,theskyismostlysunnyintheearly2.5morning,theaveragesurfacewi