be rearranged, where is the mean wind speed at height . Limits The log wind profile is generally considered to be a more reliable estimator of mean wind speed than the wind profile power law in the lowest 10–20 m of the planetary boundary layer. Between 20 m and 100 m both methods can produce reasonable predictions of mean wind speed in neutral atmospheric conditions. From 100 m to near the top of the atmospheric boundary layer the power law produces more accurate predictions of mean wind speed (assuming neutral atmospheric conditions). The neutral atmospheric stability assumption discussed above is reasonable when the hourly mean wind speed at a height of 10 m exceeds 10 m/s where turbulent mixing overpowers atmospheric instability. Applications Log wind profiles are generated and used in many atmospheric pollution dispersion models. See also Wind profile power law List of atmospheric dispersion models References Atmospheric dispersion modeling Boundary layer meteorology