IMPROVING THE ACCURACY OF SURGE MODELS USING SUBGRID CORRECTIONS

Andrew Kennedy, Damrongsak Wirasaet, Diogo Bolster, J. Casey Dietrich

Abstract


Modern storm surge models to predict hurricane water levels have gone in two opposite directions: (1) Low resolution, fast, models that may be run thousands of times as a storm approaches land; and (2) High resolution, more accurate, models that are largely used for planning and hindcasts, and are too slow for real-time ensemble forecasts. Differences in predictions between the two types of models are particularly large over flooded ground, which is most important for human activities.

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References


Casulli (2009). A high-resolution wetting and drying algorithm for free-surface hydrodynamics, Int. J. Num. Meth. Fluids, WILEY, vol. 60, pp. 32-39.




DOI: https://doi.org/10.9753/icce.v36.currents.46