Kara Sea
Water circulation patterns in the Kara Sea are complex. The Kara Sea tends to be sea ice covered between September and May, and between May and August heavily influenced by freshwater run-off (roughly 1200 km3 yr−1 ) from the Russian rivers (e.g., Ob, Yenisei, Pyasina, Pur, and Taz). The Kara Sea is also affected by the water inflow from the Barents Sea, which brings 0.6 Sv in August and 2.6 Sv in December. The advected water originates from the Atlantic, but it was cooled and mixed with freshwater in the Barents Sea before it reaches the Kara Sea. Simulations with the Hamburg shelf ocean model (HAMSOM) suggest that no typical water current pattern consists in the Kara Sea throughout the year. Depending on the freshwater run-off, the dominant wind patterns, and the sea ice formation, the water currents change.