Ecological Systems and Devices Annotation << Back On the Intra-Annual Variability of Currents in the Kara Sea Ambrosimov A.K., Kovalyov G.A. The paper studies the intra-annual variability of currents based on continuous measurements at submerged buoy stations in situ in the Kara Sea during the current. The main contribution to the dynamics of currents in 2021–2022 was made by the synoptic component, the giant infl ux of summer fl ood waters, and the spring defi cit in river water supply, which turns the currents under the ice to the south. It is shown that the synoptic effect in the fall of 2021 reversed the Yamal Current by more than 100 km, in the spring of 2022, due to the defi cit of water in the estuarine parts of the sea, the current in the central part turned to the south to equalize the level. Keywords: Kara Sea, current, submerged buoy stations, annual observations, synoptic forcing, spring defi cit in river water supply. DOI: 10.25791/esip.12.2024.1490 Pp. 03-09.