The spatial and temporal variability of convective instability in the south of western siberia according to era5 reanalysis data

A comparative analysis of the spatio-temporal variability of convective instability in the south of Western Siberia according to the K-Index and Total Totals index obtained from the ERA5 reanalysis is presented. Related to both indices, the Kulunda plain and the upper Irtysh River floodplain have the highest level of convective instability in the south of Western Siberia. In addition, high index values are observed over the southeastern Urals and the northeastern Vasyugan plain. The northern boundary extends to 62◦ and 61◦ N, respectively, with KIQ1 \ge 30 ◦C and TTQ1 \ge 50 ◦C, indicating a thunderstorm probability greater than 70