The Impact of Episodic Events on Nearshore-Offshore Transport in the Great Lakes:
Meteorological Modeling Program

P. Roebber

The objective of the proposed research is to accurately describe the overwater wind field to be used as input for circulation modeling of Lake Michigan for identified episodic transport events during the the retrospective period and the two field years of the program. The study will test the hypothesis that the generation of cross-isobath transport of material in Lake Michigan is an episodic response to storm events that occur during a critical time brought about by seasonal preconditioning of the dynamic-thermodynamic structure of the lake. The methods to be employed involve a combination of meteorological observational and modeling procedures which will generate and then validate wind fields across a range of horizontal resolutions. The results of this study will, in conjunction with the other elements of the physical research program, establish the dynamic nature of this form of episodic transport in Lake Michigan. Research and educational benefits from this portion of the program will include an enhanced understanding of the boundary layer dynamics of the Lake Michigan region (land-ice-water boundaries and their effect on the mesoscale structures of storm systems) and further insight into the nature of the interaction between seasonal and high-frequency processes.