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丽江市冰雹天气的红外云图和雷达回波特征分析.docx

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丽江市冰雹天气的红外云图和雷达回波特征分析 Abstract ThispaperanalyzestheinfraredcloudimagesandradarechofeaturesofhailweatherinLijiangCity.Basedontheweatherdataandimaginginformation,thestudyshowsthatthunderstormsandstrongupdraftsplayedanessentialroleintheformationofhailstones.Infraredcloudimagesandradarechopatternscanhelpforecasterspredicttheformationandintensityofhailstorms,facilitatetimelyandeffectiveemergencymanagementmeasures,andreducetheimpactofextremeweatheronsociety. Introduction Hailstorms,asoneofthesevereweatherhazards,havecausedsignificantlossestopeople'slivesandpropertyallovertheworld.InLijiangCity,locatedinthenorthwestofYunnanProvince,China,hailstormsmostlyoccurintheearlysummerduetoconvectiveweatheractivities.Hailstonesarearesultofstrongupdraftsanddowndraftsthatcausesmallwaterdropletsinthethunderstormtofreezeandaggregatebeforefallingfromtheclouds. Withthedevelopmentofscientifictechnologyandtheimprovementofdatacollectionmethods,theapplicationofradarandinfraredcloudimageshasincreasedinthefieldofmeteorology.Inrecentyears,thesetechnologieshavebeenwidelyusedtodetecttheformationandmovementofhailcloudsandpredictthehailstoneprecipitationarea,intensity,andduration. ThispaperanalyzestheinfraredcloudimagesandradarechofeaturesofhailweatherinLijiangCitytoimprovethepredictionaccuracyofhailstormsandprovidethebasisforearlywarningsystemsandeffectiveemergencyresponsemeasures. Methodology Inthisstudy,weanalyzedthedataobtainedfromtheLijiangMeteorologicalBureau'sweatherstation,combinedwiththeAdvancedWeatherInteractiveProcessingSystem(AWIPS)andSkew-Tanalysis.Weusedinfraredcloudimagestoobservetheformationandmovementofhailclouds,andradarechoestodetectprecipitationintensityandarea.Furthermore,weanalyzedthewindshear,watervapor,andothermeteorologicalelementstoexploretheinternalmechanismofhailstoneformation. Results InfraredcloudimagesshowthatthehailcloudsinLijiangCitytypicallyformintheafternoon,withthemaximumcloudtoptemperaturereaching-65°Cto-75°C.Thecloudsshowatypicalanvilshape,andthehighestpointsofth