An analytical model with temporal variable eddy diffusivity applied to contaminant dispersion in the atmospheric boundary layer

► A new analytical model for the prediction of pollutant dispersion in the atmospheric boundary layer is presented. ► The model incorporates either the spatial and travel time continuous dependence of the eddy diffusivity. ► To solve the time-dependent three-dimensional advection-diffusion equation, the decomposition and GILTT approaches are used. ► To our knowledge this sort of model has not been part of the literature yet.