The results on the surface thermobaric field calculated using the ICM MG SB RAS global circulation model with the allowance made for real changes in the sea surface temperature (SST) during the 19 years from 1982 through 2000 are compared with the NCEP/NCAR Reanalysis data. The model calculations underestimate the level of the eddy activity, which results in the systematic deviations of the surface pressure from the NCEP/NCAR Reanalysis data in the middle and high latitudes. The degree of SST effect on the continental areas decreases quickly with the distance from the shore. The exclusions are the regions affected by the North Atlantic, North Pacific, and Southern Oscillations. Quite high amplitude of the surface pressure oscillations not connected with the SST-induced oscillations in the interior Asia suggests the existence of an independent source of interannual oscillations of the atmospheric circulation in this region.