PARTICLE FALLOUT AND DISPERSION IN THE ATMOSPHERE. Final Report.

A study of the atmospheric dispersion of a high release of krypton-85 above a complex coastal terrain, comparison with the predictions of Gaussian models (Briggs, Doury, ADMS4)

“…The formulations of Doury were established using measured results (Hage et al, 1966;Le Quinio and Hugon, 1963;Le Quinio, 1964;Bovard et al, 1968;Doury, 1960;Facy et al, 1962). The Doury standard deviations are functions of the transfer time and the atmospheric stability (Doury, 1972(Doury, , 1981.…”

“…The use of a Gaussian model requires the standard deviation of the horizontal and/or vertical dispersion of the plume to be determined. For first generation Gaussian models, such as the models of Pasquill (1961), Briggs (1985) and Doury (1981), the standard deviations for dispersion were determined from experimental campaigns and are valid for the experimental conditions under which they were established, mainly from releases at ground level and over flat or slightly hilly terrain (Hage and Brown, 1965;Barad, 1958;Singer and Smith, 1966;Carpenter et al, 1971;Doury, 1972). A new generation of Gaussian models, such as the ADMS 4.0 model developed by CERC (2009), has made it possible to determine the dispersion of industrial releases into the atmosphere as a function of the characteristics of the atmospheric boundary layer and the characteristics of the site: buildings, relief, etc.…”