Hurricane Katrina Simulations using the COAMPS-NCOM-SWAN Coupled Atmosphere-Ocean-Wave Modeling System
QinetiQ North America, Stennis Space Center
A 48-hour simulation of Hurricane Katrina prior to landfall was done using a new coupled Atmosphere-Ocean-Wave Modelling System. An example of the effect of increased resolution of the atmospheric model by introducing nested models on the storm intensity will be shown as well as and the effect of interactive SST and waves. A comparison with wave observations found incidences of excessive significant wave heights. Differences betweeen using the Komen (1984) versus the Janssen (1991) wave growth models are presented.