CHARACTERISTICS OF THE NORTHERN HEMISPHERE 500hPa DIABATIC HEAT FLOW FIELD IN YEARS OF EL NINO AND ANTI-EL NINO-中国期刊网

摘要 Inthispaper,byusingspectralmethod,themonthly-andseasonal-scaleatmosphericdiabaticheatflow(ADHF)departurefieldsarediagnosedintheperiodof1964—1985with6ElNinoyearsand6anti-ElNinoyearsovertheNorthernhemisphere(NH).TheresultsshowthatElNinophenomenahavepronouncedinfluenceontheADHFdepar-turefields.Theresponseofatmosphereexhibitsapreferredarrangementoforganizingpositiveandnegativedeparturecentersatlow,middleandhighlatitudes.Inanti-ElNinoyears,theresponsehasthesameformsasinElNinoyears,butdeparturecentersareoppositeinphase.Furthermore,ADHFdepartureshowslow-frequencyoscillationinElNinoyearsandanti-ElNinoyears.ThecenterofdifferenceindeparturebetweenElNinoandanti-ElNinoyearsdisplaysabi-monthlyoscillation.Finally,throughair-seacorrelationanalysis,itispointedoutthattheSSTanomalyisthemostimportantcauseforADHFanomaly.

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CHARACTERISTICS OF THE NORTHERN HEMISPHERE 500hPa DIABATIC HEAT FLOW FIELD IN YEARS OF EL NINO AND ANTI-EL NINO

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CHARACTERISTICS OF THE NORTHERN HEMISPHERE 500hPa DIABATIC HEAT FLOW FIELD IN YEARS OF EL NINO AND ANTI-EL NINO

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