2005年梅雨鋒暴雨的數(shù)值模擬及診斷分析.pdf

1、南京信息工程大學碩士學位論文2005年梅雨鋒暴雨的數(shù)值模擬及診斷分析姓名：梁琳琳申請學位級別：碩士專業(yè)：氣象學指導教師：苗春生壽紹文20070501NumericalSimulationandDiagnosticAnalysisofMeiyuFrontRainstormin2005Abstract：Theaveragecirculationchamct謝sdcsduringMeiyuperiodareanalyzedwithNCEPob

2、jectiveanalysisdataanddifferentnonconventionalobjectivedataItisrevealedthatthevariationsoflowerlevelsouthwestjetinMeiyuarecloserelatedtoadvanceretreatandremainofrainbandAtthesortietime，thev刪onsplayanimportantpartinformat

3、ionofMeiyufromandheavyrain；ByusingconvanfionaldamthestrongestrainfallinMeiyuisstudiedUsingsynopticdiagnosemethods，wegetsomeconclusionsaboutverticalandhorizontalsWBctofech鋤麓c姍oftypicalMeiyuFront：thewindofMeiyufrontconstit

4、utesbysouthwestmonsooncomingfromsouthandeastaircurrentcomingfromnorthandMeiynfrontisalmostinthemiddleofeaatjetandwestjetwherethepotentialtemperatureisalmostverticalandhaslotsof∞e理∥inthelowerlevelThediagnosticanalysesshow

5、thattheheavyrainisproducedbytroughshearlineandvortexfromYangtzegivertoSichuanprovinceThemesoscalenumericalmodeMM5wasusedt0simulatethisheavyrainApparentheatsources、apparentmoisturesink，ModifiedwetQvectorandMPV跚researchedb

6、yusingsimulationresults11艟diagnosesplayagoodroleinforecastingmesoscalerainfallandrainbandThegraphdisplaysystemofmesoscalediagnosticvariablesissoftwarethatcanoutputdifferentdiagnosticvariables’graphinweatherdiagnosisWitht

7、hehelpofthissoftware，wecangeteasilydiagnosticvariables’graphindifferenttimesanddifferentlevelsUser5willunderstandthedynamicprocessfromdifferentperspectiveopenoutthem船oscalestructure’sch部胃cte培andthephysicalmeaningandavoid

8、repeatedworkingTheterrain∞mi矗vit)rtestandvaporcondensationlatenthe鰣ngtestweredoneforundmstandingthefunctionoft∞ainandvaporcondensationlatentheatin晷Throughtestswecanfoundthatthev眥exofnorthofMountainDabiehavecertaininfluen

9、cefillthelocationandintens量cyofralnfaUmeanwhile，condensationlatentheatingplayanimportantpartforthehappin鹋sandthedevelopmentofmesnscalesystemKeywords：heavyrainfall；nume刪simulation；diagnosticanalysis；thegraphicdisplaysyste