夏季東亞高空急流與天氣尺度波動(dòng)的氣候特征之間的聯(lián)系.pdf

1、南京信息工程大學(xué)碩士學(xué)位論文夏季東亞高空急流與天氣尺度波動(dòng)的氣候特征之間的聯(lián)系姓名：吳偉杰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：氣象學(xué)指導(dǎo)教師：何金海陸日宇20050501TheRelationshipbetweentheEastAsianUptropophericJetStreaminSummerandClimaticCharactersofSynopticscaleDisturbanceWuweijie(MeteorologyMajor)Dire

2、ctedbyProf.HeJinhaiandProf.LuRiyuAbstractUsingtheNCEPNCARdailydata(19792003)therelationshipbetweentheEastAsianuptroposphericjetstreaminsummerandclimaticcharactersofsynopticscaledisturbanceisanalyzed.Weexaminedtherelation

3、shipbetweenthejetstreamandactivityofsynopticscaledisturbanceQwhichdepictsinters勿ofsynopticscaledisturbanceinaperiodoftimeandtherelationshipbetweenthejetstreamandtransienteddyheatflux.Theresultsshowthatintheclimatological

4、senseactivityofsynopticscaledisturbanceismuchstrongerinJuneandAugustwhichiscorespondingwiththevariationofjetstream.Strongeractivityofsynopticscaledisturbanceisassociatedwithstrongerjetstreamandviceversa.Thetransienteddyh

5、eatfluxshowsimilarfeaturesofactivityofsynopticscaledisturbance.Ontheinterannualtimescalethereexistssignificantpositivecorrelationbetweenthetransientheatfluxandthestrengthofjetstreaminsummer(JJAmean)JuneJulyAugustrespecti

6、vely.Compositeanalysisshowsthatcorrespondingtosouthwarddisplacementoftransienteddyheatfluxthestrengthofjetstreamisstrongerandviceversa.AlresultsshowthatclimatologicallyandontheinterannualtimescaletheEastAsianuptropopheri