Using the model HYSPLIT (Hybrid Single-Particle Lagrangian Integrated Trajectory Model) of the National Oceanic and Atmospheric Administration (USA) based on the standard meteorological data the back trajectories have been constructed of the air mass flow in the atmospheric boundary layer for different seasons (for 30 days in each season) in the north of Western Siberia (in a settlement of Tarko-Sale of the Yamalo-Nenetskii Autonomous District). In this paper we describe the widespread types of the trajectories with regard to their direction and length.