Turbulent dispersion in a stable layer with a quadratic exchange coefficient |
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| Authors: | R E Robson |
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| Institution: | (1) Department of Theoretical Physics, The Australian National University, 2600 Canberra, A.C.T., Australia;(2) Present address: Physics Department, James Cook University, 4811 Townsville, Australia |
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| Abstract: | Dispersion from a line source into a stable boundary layer of thickness l is analysed through solution of the diffusion equation assuming an exchange coefficient K(z)  (1 – z/l)
2 and wind profiles u(z) z
n, with n = 0,1. Estimates of ground-level concentrations are made by developing analytic formulae where this is possible. A general method of solution using Laplace transformation and Green's function techniques is developed as an alternative to the eigenfunction expansion method discussed previously (Robson, 1983). |
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