Objective classification of climatological rain belt during floody season in China and their related circulation features
Based on the Rotated Empirical Orthogonal Function(REOF)decomposition of the pentad mean precipitation data during floody season,the rain belts in China were objectively classified.According to the spatial pattern of the REOF and the climatological mean of principle component,the location and timing of six main rain belts in floody season were defined as follows.The Jiangnan spring rain belt situates in the south of the Yangtze River and occurs in 26th and 27th pentad.The South China rain belt mainly situates in Southeast China and occurs in 33th and 34th pentad.The Jiangnan(Yangtze River)Meiyu rain belt situates in the south of the Yangtze River(Yangtze River basin)with its period in 34th and 35th(36th and 37th)pentad.The North and Northeast China rain belt locates in North and Northeast China with its period in 41st and 42nd pentad.West China autumn rain belt situates in Qinling Mountain and its surrounding region with occurring period from 49th to 52nd pentad.Based on the defined rain belts,the related typical climatological circulation features of each rain belt were further revealed.The present study could provide references for the definition of Chinese rain belts and their seasonal prediction.
floody season rain belts in ChinaREOFobjective classificationclimatological circulation features
万方数据
维普
