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AN OVERVIEW OF THE LAKE MICHIGAN MASS BALANCE MODELING PROJECT: BACKGROUND, ACCOMPLISHMENTS, AND FUTURE WORK
Citation:
Rygwelski, K R. AND R G. Kreis. AN OVERVIEW OF THE LAKE MICHIGAN MASS BALANCE MODELING PROJECT: BACKGROUND, ACCOMPLISHMENTS, AND FUTURE WORK. Presented at International Association for Great Lakes Research Meeting, Chicago, IL, June 22-26, 2003.
Description:
Modeling associated with the Lake Michigan Mass Balance Project (LMMBP) is being conducted using WASP-type water quality models to gain a better understanding of the ecosystem transport and fate of polychlorinated biphenyls (PCBs), atrazine, mercury, and trans-nonachlor in Lake Michigan. The water quality models incorporate loadings of contaminants from major source media such as tributaries, non-point discharge, the atmosphere and sediments. The primary source of the data used in the models are those data collected during 1994 and 1995. Since the interaction of solids with PCBs, mercury, and trans-nonachlor is important, an eutrophication model was developed to generate primary production solids in the lake on highly resolved space and time scales. A hydrodynamic model was used to describe advective flows, water temperature, and dispersion in the lake. Sediment resuspension rates are being predicted using SEDZL. Bioaccumulation modeling is being done to predict concentrations of PCBs in whole fish. Modeling progress within three levels of spatial resolution will be discussed along with future work areas. This abstract does not necessarily reflect EPA policy.