Abstract
It has been shown by G. I. Taylor that the daily variation in wind velocity is due to that in turbulence in the lower atmosphere. Recently Iswelkow, in order to explain it fully theoretically, solved the equation of motion by an assumption that k=k0+k1 sinσt, where k is eddy diffusion, σ=2π/86400, but the equation obtaioned between the eddy diffusion and the heifht of the reversal does not agree with Hellmann's observations.
In the present praper, therefore, I solved the equation by the assumption that V=e_??_(l-μ)l_??_(z), where l-μ=2π/86400, and that the eddy diffusion is a function of heights, and the equation obtained agrees well with the results of aetual observations.
