It is a commentary following a published paper in PNAS titled, ‘Slowdown of the Walker circulation at solar cycle maximum’, by Misios et al. (PNAS 116(15): 7186–7191, 2019). The article of Misios et al. (2019) claims that there is a slowdown of the Walker circulation during maximum periods of solar cycles. In support, they provided model results. They also gave directions of improved future predictive skill involving that knowledge of solar cycles. However, their work does not comply with various observational results. This contribution highlights those areas and pinpoints discrepancies. Knowing the limitations of models, if any model results match some very limited part of observations, it is not possible to make similar claims. It raises doubt on any improvement of future predictive skill.

这是Misios等人在PNAS上发表的题为“太阳周期最大时沃克环流的减速”的论文之后的评论。（PNAS 116（15）：7186–7191，2019）。Misios等人的文章。（2019）声称在太阳周期的最大周期内，沃克环流的速度变慢了。为了提供支持，他们提供了模型结果。他们还提供了有关太阳循环知识的未来改进的预测技能的指导。但是，他们的工作并不符合各种观察结果。这一贡献突出了这些领域并指出了差异。知道模型的局限性，如果任何模型结果与观察结果的某些非常有限的部分匹配，就不可能做出类似的主张。它对未来的预测技能的任何提高提出了疑问。