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Circulation and Storm Surge Work Unit

The Circulation and Storm Surge work unit is advancing the development of 2D and 3D circulation modeling technology for the accurate and reliable prediction of inundation and flooding from extratropical storms and hurricanes.

Peak Storm Surge Simulation from Hurricane Katrina
Winds, tides, waves, rainfall and river influx all influence coastal circulation and storm surge levels. To simulate the effect these processes have on inundation, flooding, sediment transport, and beach erosion, MORPHOS is advancing the development of ADCIRC 2D and 3D modeling systems. Research areas include optimizing the accuracy and parallel efficiency of Discontinuous Galerkin (DG) codes for correctly computing mass transfers across an unstructured grid, and adding such enhancements as the robust and accurate wetting and drying of grid elements; improving the modeling of air-sea momentum transfer by examining the consistency of drag relationships between wave and surge models; improving the characterization of existing land roughness; implementation of more robust frictional resistance formulations; and examination of three-dimensional effects in estimating hurricane surges. Applications of present MORPHOS-sponsored technology include a reconstruction of hurricane surges for Hurricanes Katrina and Rita along the Louisiana and Mississippi coasts.



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