山東夏季降水異常與大氣環(huán)流的關(guān)聯(lián).pdf

1、中國海洋大學(xué)碩士學(xué)位論文山東夏季降水異常與大氣環(huán)流的關(guān)聯(lián)姓名：楊士恩申請學(xué)位級別：碩士專業(yè)：大氣科學(xué)指導(dǎo)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