Аннотация:The paper analyzes the statistical and temporal seasonal and decadalvariability of the atmospheric pressure field in the Arctic region of Russia.Schemes for the frequency analysis of probability transitions for characteristicsof stochastic-diffusion processes were used as the main research method. On thebasis of the given series of 60 years long from 1948 to 2008, such parameters ofdiffusion processes as the mean (drift process) and variance (diffusion process)were calculated and their maps and time curves were constructed. The seasonaland long-term variability of calculated fields was studied as well as their dependencieson a discretization of the frequency intervals. These characteristics wereanalyzed and their geophysical interpretation was carried out. In particular, theknown cycles of solar activity in 11 and 22 years were revealed. Numerical calculationswere performed on the Lomonosov-2 supercomputer of the LomonosovMoscow State University.