The Atmospheric Boundary Layer (ABL) is the region between the ground surface and the lowest part of the atmosphere where frictional forces decelerate the wind and cause turbulence. Atmospheric turbulence affects the flow around buildings and the pressure distribution on their facades. Hence, in order to predict environmental flows accurately it is necessary to account for atmospheric turbulence in the CFD models. To generate realistic turbulence throughout the flow field I use SEM with prescribed statistical characteristics of the ABL to be reproduced.