Recent studies have shown that the quasi‐biennial oscillation (QBO) affects the boreal winter Madden‐Julian oscillation (MJO), its teleconnection, and even its subseasonal prediction skill. Despite its widespread influences, the QBO‐MJO connection has rarely been examined with a climate model. Here, we demonstrate that the QBO‐MJO connection is not well reproduced in the four Coupled Model Intercomparison Project 5 (CMIP5) models that internally generate the QBO. A weak hint of the QBO‐MJO connection is found only in the medium‐resolution Max Planck Institute Earth System Model (MPI‐ESM‐MR). The MJO response to the QBO in this model, however, is not robust and is less organized than that in the observations. The reasons for no or weak QBO‐MJO connection in the climate model simulations are discussed in terms of the underestimated QBO and MJO amplitudes and weak static stability change in response to the QBO in the model.

中文翻译：

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CMIP5模型中的QBO‐MJO连接

最近的研究表明，准两年一次的振荡（QBO）会影响北半球冬季的Madden-Julian振荡（MJO），其遥相关性，甚至会影响其季下预报技能。尽管影响广泛，QBO‐MJO的联系很少用气候模型进行检查。在这里，我们证明了在内部生成QBO的四个耦合模型比对项目5（CMIP5）模型中，QBO-MJO连接没有得到很好的再现。仅在中等分辨率的马克斯普朗克研究所地球系统模型（MPI-ESM-MR）中发现了QBO-MJO连接的弱提示。但是，在该模型中，MJO对QBO的响应并不稳健，而且与观察结果相比，组织性较差。