THE EFFECT OF EQUATORIAL CENTRAL PACIFIC SSTAS ON THE INTERANNUAL VARIATION OF PRECIPITATION OVER SOUTHWEST CHINA DURING SPRING-中国期刊网

摘要 TheinterannualvariationsofrainfalloversouthwestChina(SWC)duringspringanditsrelationshipwithseasurfacetemperatureanomalies(SSTAs)inthePacificareanalyzed,basedonmonthlymeanprecipitationdatafrom26stationsinSWCbetween1961and2010,NCEP/NCARre-analysisdata,andHadleyglobalSSTdata.SensitivitytestsareconductedtoassesstheresponseofprecipitationinSWCtoSSTAsovertwokeyoceanicdomains,usingtheglobalatmosphericcirculationmodelECHAM5.TheinterannualvariationofrainfalloverSWCinspringisverysignificant.Therearestrongnegative(positive)correlationcoefficientsbetweentheanomalousprecipitationoverSWCandSSTAsovertheequatorialcentralPacific(themid-latitudePacific)duringspring.NumericalsimulationsshowthatlocalrainfallinthenorthwestoftheequatorialcentralPacificissuppressed,andasubtropicalanticyclonecirculationanomalyisproduced,whileacycloniccirculationanomalyinthemid-latitudewesternPacificoccurs,whentheequatorialPacificSSTAsareinacoldphaseinspring.AnomalousnortherlywindsappearinthenortheasternpartofSWCinthelowertroposphere.PrecipitationincreasesovertheMaritimeContinentofthewesternequatorialPacific,whileacycloniccirculationanomalyappearsinthenorthwestofthewesternequatorialPacific.AtroughovertheBayofBengalenhancesthesoutherlyflowinthesouthofSWC.ThetroughalsoenhancesthetransportofmoisturetoSWC.ThewarmmoistureintersectswithanomalouscoldairoverthenortheastofSWC,andsoprecipitationincreasesduringspring.Ontheinterannualtimescale,theimpactsofthemid-latitudePacificSSTAsonrainfallinSWCduringspringarenotsignificant,becausethemid-latitudePacificSSTAsareaffectedbytheequatorialcentralPacificSSTAs;thatis,themid-latitudePacificSSTAsareafeedbacktothecirculationanomalycausedbytheequatorialcentralPacificSSTAs.

1王会军. Modelling　the　Interannual　Variation　of　Regional　Precipitation　over　China.大气科学及气象学,1994-02.
2冯涛;沈新勇;黄荣辉;陈光华. INFLUENCE OF THE INTERANNUAL VARIATION OF CROSSEQUATORIAL FLOW ON TROPICAL CYCLOGENESIS OVER THE WESTERN NORTH PACIFIC.大气科学及气象学,2017-01.
3蓝光东;温之平;贺海晏. INTERANNUAL VARIATIONS OF ATMOSPHERIC HEAT SOURCES AND MOISTURE SINKS OVER THE EQUATORIAL PACIFIC AND THEIR RELATIONS TO THE SST ANOMALIES.大气科学及气象学,2004-02.
4潘蔚娟;李春晖;蒋承霖. CLIMATOLOGICAL CHARACTERISTICS OF SPRING PRECIPITATION OVER SOUTHERN CHINA AND ITS INTRASEASONAL OSCILLATION.大气科学及气象学,2016-02.
5范可. A STATISTICAL PREDICTION MODEL FOR SPRING RAINFALL OVER NORTHERN CHINA BASED ON THE INTERANNUAL INCREMENT APPROACH.大气科学及气象学,2012-04.
6CHEN Xiong;LI Chongyin;TAN Yanke. The Influence of El Nino on MJO over the Equatorial Pacific.海洋科学,2015-01.
7李丽平;王超;章开美. POSSIBLE RELATIONSHIP BETWEEN THE INTERANNUAL ANOMALY OF THE TROPICAL PACIFIC SEA SURFACE HEIGHT AND SUMMER PRECIPITATION IN CHINA.大气科学及气象学,2013-01.
8谷德军;纪忠萍;林爱兰;郝立生. THE VARIATION OF THE SPRING PRECIPITATION IN GUANGZHOU AND ITS PRECURSORY SIGNALS.大气科学及气象学,2006-02.
9卢楚翰;黄露;何金海;秦育婧. INTERANNUAL VARIATION IN HEAT CONTENT OF THE WESTERN PACIFIC WARM POOL AND ITS EFFECT ON EASTERN ASIAN CLIMATE ANOMALIES.大气科学及气象学,2015-03.
10牛宁;李建平. Interannual Variability of Autumn Precipitation over South China and its Relation to Atmospheric Circulation and SST Anomalies.大气科学及气象学,2008-01.

THE EFFECT OF EQUATORIAL CENTRAL PACIFIC SSTAS ON THE INTERANNUAL VARIATION OF PRECIPITATION OVER SOUTHWEST CHINA DURING SPRING

来源期刊

相关推荐

同分类资源更多

相关关键词

THE EFFECT OF EQUATORIAL CENTRAL PACIFIC SSTAS ON THE INTERANNUAL VARIATION OF PRECIPITATION OVER SOUTHWEST CHINA DURING SPRING

来源期刊

相关推荐

同分类资源 更多

相关关键词

同分类资源更多