Graham Sustainability Institute

Multiple Modeling

November 2016

This video describes how and why scientists use models and the benefits of using a multiple model approach for lake, ecosystem, and climate applications. A multiple model approach increases confidence in model results. Using this approach, scientists capture the range of potential outcomes while smoothing out extremes that might be present in any one model. U-M Water Center scientists used the multiple model approach to evaluate how the Maumee River watershed and Lake Erie water quality may be improved. In this case, scientists analyzed nutrient reduction scenarios for the Maumee River watershed and used results from multiple models to inform the development of new Lake Erie phosphorus targets under Annex 4 of the Great Lakes Water Quality Agreement.

Keywords: University of Michigan Water Center, multiple model approach, watershed model, ecosystem model, climate model, Lake Erie, nutrients, Great Lakes