based on the results of the numerical experiments using the model of the ocean circulation developed at the
Institute of Numerical Mathematics of the Russian Academy of Sciences with a resolution of 0.25 degrees in
latitude and longitude with 27 vertical levels. The calculations were performed for the North Atlantic area from
30
S, including the Arctic Ocean and the Bering Sea. The width of the Denmark Strait at 66 N is about 650 km, and the depth is approximately 550 m. The fields of the temperature, salinity, and density and the compo-
nents of the current velocities were simulated. In this period, the average overflow of dense waters with the con-
ventional potential density
0 > 27.80 to the North Atlantic through the Denmark Strait was 1.86 ± 0.96 Sv, and, for the nearbottom and intermediate waters with
0 > 27.50, it was 3.84 ± 1.31 Sv. The maximum values of the overflow transport through the strait were recorded in 1962, 1972, 1983, 1990, and 2000. Exactly these years
showed the highest values of the North Atlantic oscillation (NAO) index. This fact confirms the domination of
the decadal variability of the hydrogeological processes in the North Atlantic. The model section of the current
velocity through the strait showed the occurrence of at least four well marked jets that vertically occupy the
entire sectional area from the surface to the bottom. The two jets divided by a northward jet at the strait’s middle
move southward along the Greenland slope. The northward current along Iceland is also identified. This struc-
ture of the currents is also supported by the analysis of the observed variability of the absolute topography of
the ocean’s surface.