What is the result of air descending into the friction layer in terms of wind behavior?

When air descends into the friction layer, it encounters the effects of surface friction, which influences its speed and direction. As the descending air interacts with the surface, the wind tends to veer, which means it shifts clockwise in the Northern Hemisphere or counterclockwise in the Southern Hemisphere relative to the initial wind direction.

Additionally, as air moves towards the surface, it experiences a decrease in speed due to friction with the terrain, which leads to a reduction in the overall wind velocity. This combination of veering and a decrease in wind speed characterizes the behavior of wind in the friction layer, making it the most accurate representation of what occurs in this atmospheric condition.