Modeling the atmospheric transport and deposition of mercury to the Great Lakes

 

Mark Cohen, Richard Artz, Roland Draxler, Paul Miller, Laurier Poissant, David Niemi, Dominique RatteŽ, Marc Deslauriers, Roch Duval, Rachelle Laurin, Jennifer Slotnick, Todd Nettesheim, and John McDonald

Environmental Research, Vol. 95, pp. 247-265, 2004

 

Abstract - A special version of the NOAA HYSPLIT 4 model has been developed and used to estimate the atmospheric fate and transport of mercury in a North American modeling domain. Spatial and chemical interpolation procedures were used to expand the modeling results and provide estimates of the contribution of each source in a 1996 anthropogenic US/Canadian emissions inventory to atmospheric mercury deposition to the Great Lakes.While there are uncertainties in the emissions inventories and ambient data suitable for model evaluation are scarce,model results were found to be reasonably consistent with wet deposition measurements in the Great Lakes region and with independent measurement-based estimates of deposition to Lake Michigan. Sources up to 2000 km from the Great Lakes contributed signi .cant amounts of mercurythrough atmospheric transport and deposition.While there were significant contributions from incineration and metallurgical sources, coal combustion was generally found to be the largest contributor to atmospheric mercury deposition to the Great Lakes.

 

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