EFFECT OF ARCTIC ICE COVER ON THE MONTHLY TEMPERATURE AND PRECIPITATION IN CHINA

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摘要 Filteringtechnique,extendedempiricalorthogonalfunction(EEOF),spectrumdistributionfunctionandcorrela-tionanalysishavebeenemployedtostudytherelationshipbetweenarcticicecover(AIC)andmonthlymeantempera-tureandprecipitationinChina.Thefunctionofpowerspectrumdensityshowsthatnotonlyasemi-annualandanan-nualoscillationbutalsoaquasi-biennialoscillationcanbefoundinAICareaindexseries,especiallyinJune,SeptemberandNovember.Duringtheperiodofanalysis,itcanalsobefoundthatthereexistsagoodcorrelationbetweentheElNinoeventsandtheAICareaindex.AnanalysisontheEEOFofAICandthetemperatureoverChinaexhibitssomesignificanttemporal-spatialpatternsandabettertime-laginterrelationshipbetweenthem.Theresultsfromthecorrela-tionanalysisindicatethatthevariationofAICareahasasignificantinfluenceonthetemperatureandprecipitationinsubsequentmonthsoverChina.Inaddition,itexperiencesaquasi-bienniallow-frequencyoscillationanddisplaystocertainextentsomefeaturesofpropagation.
机构地区 不详
出处 《气象学报:英文版》 1992年3期
出版日期 1992年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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