摘要
InthisstudytherelationshipbetweentheArcticOscillation(AO)andclimateinChinainborealwinterareinvestigated.Correlationanalysisforthelast41yearsshowsthatthewintertemperatureandprecipitationinChinachangeinphasewithAO.Highpostiviecorrelation(>0.04)betweentemperatureandAOappearsinthenorthernChina.HighcorrelationcoefficientsbetweenprecipitationandAOcoverthesouthernChina(closetotheSouthChyinaSea)andthecentralChina(between30°-40°Nandeastof-100°E),withthevaluesvaryingbetween+0.3and+0.4.ItisfoundthatduringthepastseveraldecadestheprecipitationwasstronglyaffectedbyAO,butforthetemperaturetheSiberianHighplaysamoreimportantrole.AttheinterdecadaltimescaletheAOhassignificantinfluenceonbothtemperatureandpreciptiation.MultivariateregressionanalysisdemonstratesthatAOandtheSiberianHighrelatedvarianceintemperatureandprecipitationis35%and11%respectively,Forprecipitation,howevertheportionisratherlow,implyingthatsomeotherfactorsmayberesponsibleforthechangesinprecipitation,inadditiontoAOandtheSiberianHigh.
出版日期
2003年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)