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Analysis is performed of the May-September mean circulation,referred to as the background circulationhereinafter,in the IAP(Institute of Atmospheric Physics,Academia Sinica)GCM model atmosphere,It is foundthat in an El Nino year there occur anomalies in a set of major systems,e.g.,Southetm Oscillation,Walker andHadley circulations,the western Pacific subtropical high and ITCZ,2nd in large-scale precipitation,with theirhappening dominantly in the Northern Hemisphere tropical and subtropical latitudes in the western Pacific.These results that are in rough agreement with the analyz(?)d actual observations demonstrate the applicabilities ofthe model to the study of low-latitude circulations.
Analysis is performed of the May-September mean circulation, referred to as the background circulation, in the IAP (Institute of Atmospheric Physics, Academia Sinica) GCM model atmosphere, It is found that in an El Nino year there occur anomalies in a set of major systems, eg Southetm Oscillation, Walker and Hadley circulations, the western Pacific subtropical high and ITCZ, 2nd in large-scale precipitation, with their chap dominant in the Northern Hemisphere tropical and subtropical latitudes in the western Pacific. The results of these are in rough agreement with the analyz (?) d actual values demonstrate the applicability of the model to the study of low-latitude circulations.