山東夏季降水異常與大氣環(huán)流的關聯(lián).pdf

1、中國海洋大學碩士學位論文山東夏季降水異常與大氣環(huán)流的關聯(lián)姓名：楊士恩申請學位級別：碩士專業(yè)：大氣科學指導教師：王啟20040601AnaIysisofthecircuIationvariationsandthesummerrainfaIIinShandongprovinoeAbstractByusingmonth]YaveragedNCEP／NCARreanalysisdataoftheatmospherjccirculationand

2、thedataofsummerprecipitationin17meteorologicalstationsinShandongpreyincefrom1961to1998，spatialandtemporalcharacteristicsofsummerpreciPitationareanalyzed，andtherelationsbetweentheatmosphericcirculationandrainfallpatternsa

3、rediSOUSsedThebasicprecipitationpatternisinphasewitheachpartofthewholeprovineeThesummerrainfallisdegressivefromSOUtheasttonorthwestofthepreyinceThedifferenceofrainfallbetweentheSOUthandthenorLhjsobv／OUSandtheOSCilIationp

4、eriodisabout38—9yearBasedonthedroughtandfloodthathadbeendefinded，TherelationbetweentheatmosphericcirculationandrainfallpatterrsduringsummerinShandengprovinceisdiSCUSsedTheresultesshowthatindrought／floodyearsprominentcirc

5、ulationanonmaliesoccuroverNorthernHemisphereThetroughinEastAsia，UralAraeaBlockingandWesternNorthPacificSubtropicalHighareveryimportantsystemsinfluencingthesummerpreciPiationThedifferenceofphysicalfeaturesandhighJetsbetee

6、ndrouhtandfloodshowthattropicalandsubtropicalsystemsareeffectingthesummerprecipiationThecirculationanomaliesinEurope—AsiafromhighlatitudestolowlatitudesappearstobetheEUteleconnectior]patternofthegeneralcirculationStudied

7、thepre—atmosphericeirculationsfindthat’Iropica]convectionactivityateimportantsysteminfluencingthesummerprecipitationInthewet—yearstheyavestrongThroughHadleyCellandWealkCelltheenergyistransfertomiddle1atitudesandhighlatit