夏季低空越赤道氣流與ENSO及中國夏季降水關(guān)系的研究.pdf

1、南京氣象學院碩士學位論文夏季低空越赤道氣流與ENSO及中國夏季降水關(guān)系的研究姓名：陳兵申請學位級別：碩士專業(yè)：氣象學指導教師：郭品文20040501TherelationshipbetweenSHINIIercrossequatorflowsandENSOandChinasummerrainfallAbstractThefeaturesofinterarmualrelationshipsandthedecadalvariabilkies

2、ofinterarmualrelationshipsbetweensuminer850hPacrossequatorflowsofeasternhemisphereandENSOandChinasummerrainfallareanalyzedbyusingNCEP／NCARreanatysisdata，seasurfacetemperaturesdataofHadleyCenterandrainfaUdataof160statierr

3、sofChinaResultsshewthat：Thereare5CROSSequatorflowschannelsintheeasternhemisphereTheyare45。E，90。E，105。E，125。Eandl50。EMascareneHi曲isweaker(stronger)andAustraliaHi醢isstronger(weaker)thannormalintheE1Nifio(LaNifia)years，whic

4、hcausesummer850hPaSomalijetweaker(stronger)andthecrossequatorflowsof90。E，105。E，125。Eand150。Earestronger(weaker)thannormalintheE1Nifio(LaNifia)yearsThestrongcrossequatorflowsof90。E，105。E，125。Eand150。EandweakSomalijetwillc

5、ausethewesternwindanomolisbreakingoutinthewesternequatorPacific，whichwiltbeinfavorofthearisingofENSOeventsThcinterarmualrelationshipbetweenSomalijetandENSOhasbrokendowninthelate1970swhiletheinterannualrelationshipsbetwee

6、nthecrossequatorflowsof105。E125。Eand150。EandENSOhavestrengthenedinthelate1960sTheeast、ⅣardshiftintheWalkercirculationandwesternwindanomolisarethepossiblereasonsofthechangeofrelationshipsbetweensummercrossequatorflowsandE

7、NSOEastAsiasummermonsoonisstrongerwhenthecrossequatorflowof90。EisstrongerthannormalTheEastAsiasummermonsoonanemolycarlaffecttheatmospherecirculationandclimateintheEastAsiaandPacificOceanregionsthroughthewesternPacificsub