A note on the upper boundary conditions for turbulence models in the neutral atmosphere

In the modelling of turbulence in the atmospheric boundary layer, some knowledge is generally required of the turbulence quantities themselves, as well as their effect on the mean flow. For such applications, it is therefore necessary that the details of the modelling are consistent with the boundary conditions assumed. This note gives an indication of the way in which the turbulence quantities will decay near the outer edge of the boundary layer in order that all the appropriate equations and conditions should be satisfied.Formerly, Cranfield Institute of Technology.