Abstract
A solution is obtained for the turbulent diffusion equation, considering only the upward and forward diffusion but neglecting the lateral diffusion and the forward convection by the mean wind. With the proper boundary conditions this equation describes evaporation from an extremely narrow wet surface at ground level, which extends laterally to infinity. Comparison of this solution with an earlier solution for evaporation from an extremely small circular surface shows that the effect of lateral diffusion on the evaporation from such a surface increases with increasing stability of the atmosphere. This effect is under neutral conditions probably of the order of 13%.
Published Version
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