Atmospheric circulation variability is a major determinant of daily weather fluctuations. It also plays a crucial role in governing climate and weather. This is essential for long-term planning and the effective implementation of climate adaptation and mitigation efforts. The ability to forecast periods with significant weather anomalies in the near term, ranging from weeks to months and even years ahead, relies on accurately predicting the development of anomalies in the large-scale preconditioning of atmospheric circulation and its predominant modes of variability. In order to determine and improve predictability, it is essential to improve our understanding of atmospheric variability and its controls. We therefore invite contributions that investigate the modes and mechanisms of atmospheric variability, explore their implications for seasonal and regional climate predictability, and examine the links between seasonal prediction, climate forecasting and atmospheric dynamics. Furthermore, we seek research addressing the challenges posed by atmospheric circulation variability in climate modelling, as well as studies that enhance our understanding of past variability and improve our ability to anticipate future changes in the context of a warming climate.