You searched for: “atmospheric boundary layers
atmospheric boundary layer, surface boundary layer, friction layer (s) (noun); surface boundary layers; friction layers; atmospheric boundary layers (pl)
The thin layer of air adjacent to the Earth's surface; surface layer: The atmospheric boundary layer is usually considered to be less than 300 feet (91 meters) high.

In the Earth's atmosphere, the planetary boundary layer is the air layer near the ground affected by diurnal heat, moisture, or momentum transfer to or from the surface.

The thin layer of air adjacent to the Earth's surface; ground layer: The atmospheric boundary layer extends up to the so-called anemometer level (the base of the Ekman layer [thin top layer of the sea]). Within this layer the wind distribution is determined largely by the vertical temperature gradient and the nature and contours of the underlying surface, and shearing stresses are approximately constant.

This entry is located in the following units: atmo-, atm- + (page 2) sphero-, spher-, -sphere- (page 2)