ECHAM5-Simulated Impacts of Two Types of El Nio on the Winter Precipitation Anomalies in South China  

作　　者：SU Jing-Zhi ZHANG Ren-He ZHU Cong-Wen 

机构地区：[1]Chinese Academy of Meteorological Sciences

出　　处：《Atmospheric and Oceanic Science Letters》2013年第5期360-364,共5页大气和海洋科学快报（英文版）

基　　金：supported by the National Basic Research Program of China(2009CB421404);the National Natural Science Foundation of China(41175071,41221064);the Basic Research Fund of the Chinese Academy of Meteorological Sciences(2012Z001,2013Z002,2010Z001,and 2010Z003)

摘　　要：The authors used an atmospheric general circulation model （AGCM） of European Centre Hamburg Model （ECHAM5.4） and investigated the possible impacts of eastern Pacific （EP） and central Pacific （CP） El Ni（n）o on the winter precipitation anomalies in South China.A composite analysis suggested much more rainfall during the mature phase of EP El Ni（n）o than in the case of CP El Ni（n）o,and their corresponding observed wet centers to be located in the southeast coast and the region to the south of the Yangtze River,respectively.Results obtained on the basis of model-sensitive run imply that the modelsimulated rainfall anomalies agree well with the observation,and the magnitude of simulated rainfall anomalies were found to be reduced when the amplitude of sea surface temperature anomaly （SSTA） forcing of EP and CP El Ni（n）o was cut down.These results imply that the rainfall anomaly in South China is very sensitive not only to the type of El Ni（n）o but also to its intensity.The authors used an atmospheric general circulation model(AGCM) of European Centre Hamburg Model(ECHAM5.4) and investigated the possible impacts of eastern Pacific(EP) and central Pacific(CP) El Nio on the winter precipitation anomalies in South China.A composite analysis suggested much more rainfall during the mature phase of EP El Nio than in the case of CP El Nio,and their corresponding observed wet centers to be located in the southeast coast and the region to the south of the Yangtze River,respectively.Results obtained on the basis of model-sensitive run imply that the modelsimulated rainfall anomalies agree well with the observation,and the magnitude of simulated rainfall anomalies were found to be reduced when the amplitude of sea surface temperature anomaly(SSTA) forcing of EP and CP El Nio was cut down.These results imply that the rainfall anomaly in South China is very sensitive not only to the type of El Nio but also to its intensity.

关 键 词：eastern/central Pacific El Ni（n）o precipitation ECHAM5 South China 

分 类 号：P426.615[天文地球—大气科学及气象学]