Note on the Theory of Turbulent Diffusion in the Lower Layer of the Atmosphere

Abstract

In this paper, the author deals theoretically with the vertical turbulent diffusion of minute particles emitted continuously form a line source in the lower layer of the atmosphere, taking into consideration the non-homogeneity of turbulence in that layer.
Assuming the scale of the largest turbulent element at any point to be in proportion to the height from the ground surface, and also assuming Taylor-Karman's correlation coefficient of vertical turbulent wind velocities to be of a reasonable functional form, the shape of diffused smoke is determined theoretically, following the same procedure as that used in previous papers of the same author. By means of results obtained here, it is to some extent made clear how far the turbulent diffusion in the homogeneous atmosphere differs from that in the lower layer of the real non-homogeneous atmosphere.