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The objective of this work is to present an analytical approach for the solution of the advection-diusion equation that describes a pu model. This model simulate the behavior of a pollutant for an instantaneous emission in non homogeneous and non stationary meteorological conditions. The GILTT method (Generalized Integral Laplace Transform Technique) was used to solve the problem. With the model presented in this work we aim to rene an earlier one, which assumes a homogeneous longitudinal diusion, using a Gaussian in this direction. For this purpose, in the present work, we solve a transient three-dimensional problem taking into account the diusion coecients in all directions. For comparison and validation of the proposed model we used data from the experiment of Copenhagen and the results obtained with the Gaussian model.

Solution of the Puﬀ Model for Pollutant Dispersion in the Atmospheric Boundary Layer by an Analytical Approach