This study investigates if climate change has affected the predictability of daily precipitation in Serbia (1961–2020) using Generalized Weighted Permutation Entropy. Results show that predictability (entropy values) of mean fluctuations remains stable, but predictability of small and large fluctuations exhibits pronounced spatial and temporal variability across two climatic sub-periods. We also identify cases where changes in predictability occur independently of annual precipitation totals.

In this study we analyse the output of a chemistry and transport model together with observations of different meteorological and compositional variables to demonstrate the link between sudden stratospheric warming and transport of stratospheric air to the surface in the subpolar regions of Europe during the cold season. Our findings have particular implications for atmospheric composition since climate projections indicate more frequent sudden stratospheric warming under a warmer climate.