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HIGH RESOLUTION MODELLING OF PCB CONGENERS IN LAKE MICHIGAN USING THE LAKE MICHIGAN (LM3) CONTAMINANT MODEL
Citation:
Gerstner, G., W. Melendez, D D. Endicott, AND K R. Rygwelski. HIGH RESOLUTION MODELLING OF PCB CONGENERS IN LAKE MICHIGAN USING THE LAKE MICHIGAN (LM3) CONTAMINANT MODEL. Presented at International Association for Great Lakes Research Meeting, Chicago, IL, June 22-26, 2003.
Description:
The Lake Michigan Level 3 (LM3) Model is a numerical model of Lake Michigan used to predict the fate and transport of 54 PCB congeners. The LM3 model segments Lake Michigan horizontally with a 5 x 5 km grid and vertically with 19 sigma layers for a total of 44,042 water column segments. The Princeton Ocean Model (POM) and the SEDZL model are linked to LM3 to simulate hydrodynamic and sediment transport, respectively. LM3 also includes the ULTIMATE QUICKEST transport algorithm. Primary production is simulated by the LM3 Eutro model. PCBs have a strong affinity for the organic carbon particles that are associated with primary production. The model will be calibrated to PCB data collected in 1994 and 1995 during the Lake Michigan Mass Balance Study. Sensitivities of the model to specific model parameters and long-term predictions of congener-specific PCB concentrations in Lake Michigan under different management scenarios will be examined. This abstract does not necessarily reflect EPA policy.