On the similarity of the characteristics of turbulence in an unstable boundary layer
Abstract
The statistics of turbulence, such as the standard deviation of fluctuating velocities, in an unstable atmospheric boundary layer are assumed to be characterized by the combination of three specific lengths, MoninObukhov length L, observation height z and the height of mixing layer h. Unlike MoninObukhov similarity, even near the ground the effect of h is taken into account. According to observation, the length scale of the vertical velocity is proportional to z at least near the ground, but the lateral component depends mostly on h alone. The length scale of the longitudinal component depends on z and h.
 Publication:

BoundaryLayer Meteorology
 Pub Date:
 May 1982
 DOI:
 10.1007/BF00116112
 Bibcode:
 1982BoLMe..23...69M
 Keywords:

 Atmospheric Boundary Layer;
 Atmospheric Turbulence;
 Boundary Layer Stability;
 Mixing Length Flow Theory;
 Similarity Theorem;
 Wind Velocity;
 Mixing Layers (Fluids);
 Turbulent Mixing;
 Velocity Distribution;
 Vertical Distribution;
 Fluid Mechanics and Heat Transfer