A previously developed hybrid coupled model (HCM) is composed of an intermediate tropical Pacific Ocean model and a global atmospheric general circulation model (AGCM), denoted as HCM^AGCM. In this study, different El Niño flavors, namely the Eastern-Pacific (EP) and Central-Pacific (CP) types, and the associated global atmospheric teleconnections are examined in a 1000-yr control simulation of the HCM^AGCM. The HCM^AGCM indicates profoundly different characteristics among EP and CP El Niño events in terms of related oceanic and atmospheric variables in the tropical Pacific, including the amplitude and spatial patterns of sea surface temperature (SST), zonal wind stress, and precipitation anomalies. An SST budget analysis indicates that the thermocline feedback and zonal advective feedback dominantly contribute to the growth of EP and CP El Niño events, respectively. Corresponding to the shifts in the tropical rainfall and deep convection during EP and CP El Niño events, the model also reproduces the differences in the extratropical atmospheric responses during the boreal winter. In particular, the EP El Niño tends to be dominant in exciting a poleward wave train pattern to the Northern Hemisphere, while the CP El Niño tends to preferably produce a wave train similar to the Pacific North American (PNA) pattern. As a result, different climatic impacts exist in North American regions, with a warm-north and cold-south pattern during an EP El Niño and a warm-northeast and cold-southwest pattern during a CP El Niño, respectively. This modeling result highlights the importance of internal natural processes within the tropical Pacific as they relate to the genesis of ENSO diversity because the active ocean–atmosphere coupling is allowed only in the tropical Pacific within the framework of the HCM^AGCM.

先前开发的混合耦合模型（HCM）由中间热带太平洋模型和全球大气环流模型（AGCM）组成，记为HCM ^AGCM。在这项研究中，不同的厄尔尼诺现象，即东太平洋（EP）和中太平洋（CP）类型，以及相关的全球大气遥相关，在 HCM AGCM 的 1000 年控制模拟中进行了^检查。 HCM ^AGCM表明EP型厄尔尼诺事件和中部型厄尔尼诺事件在热带太平洋相关海洋和大气变量方面存在显着不同的特征，包括海表温度（SST）的幅度和空间格局、纬向风应力和降水异常。海温预算分析表明，温跃层反馈和纬向平流反馈分别对东部型厄尔尼诺事件和中部型厄尔尼诺事件的增长做出了主要贡献。对应于东部型和中部型厄尔尼诺事件期间热带降雨和深对流的变化，该模型还再现了北半球冬季温带大气响应的差异。特别是，东部型厄尔尼诺往往在激发北半球极地波列模式方面占主导地位，而中部型厄尔尼诺往往更倾向于产生类似于太平洋北美（PNA）模式的波列。因此，北美地区存在不同的气候影响，东部型厄尔尼诺期间呈现北暖南冷格局，中部型厄尔尼诺期间呈现东北暖西南冷格局。该模拟结果强调了热带太平洋内部自然过程的重要性，因为它们与 ENSO 多样性的起源有关，因为活跃的海洋-大气耦合仅在 HCM AGCM 框架内的热带太平洋中被^允许。