The Quasi‐Biennial Oscillation (QBO) of zonal‐mean zonal winds in the tropical stratosphere is a conspicuous feature of the Earth climate. Its influence virtually extends to the whole atmosphere. The QBO is driven by the dissipation of waves generated by deep convection in the tropics. Yet a significant fraction of these waves have spatial scales that are not explicitly resolved in current climate models, so that the evolution of the QBO in a changing climate still remains unclear. A study by Vincent and Alexander (2020, https://doi.org/10.1029/2020JD032779) shows that recent long‐duration balloon observations, combined with information on the vertical structure of the tropical atmosphere, could contribute to provide significantly improved constraints on wave parameterization in models.

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我们如何改善气候模型中准双年度振荡的驱动力？

热带平流层中纬向平均纬向风的准两年一次振荡（QBO）是地球气候的显着特征。它的影响实际上扩展到整个大气层。QBO受热带深对流产生的波消散的驱动。然而，这些波中有很大一部分具有在当前气候模型中未明确解析的空间尺度，因此，在不断变化的气候中，QBO的演化仍不清楚。文森特和亚历山大（2020，https://doi.org/10.1029/2020JD032779）的一项研究表明，近期的长期气球观测，结合有关热带大气垂直结构的信息，可以大大改善对热带气旋的约束。模型中的波参数化。