Dr. Roman Sedakov is a senior research scientist at the Shirshov Institute of Oceanology, specializing in ocean circulation, numerical modeling, and coastal physical processes. His work focuses on the sensitive coastal Arctic regions, where he employs numerical simulations and field observations to investigate circulation patterns, freshwater fluxes from major Siberian rivers, and climate-driven changes in ocean stratification and ice cover. Key research areas include the transformation of Arctic circulation under Atlantification, the freshwater cycle, and the impact of riverine input on salinity and density structures in Arctic. Dr. Sedakov’s recent contributions include the discovery of a winter under-ice surface current from the Kara to the Laptev Sea via the Vilkitsky Strait, assessment of global ocean reanalysis products for the Russian Arctic seas.