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Implementation And Validation Of A Virtual Buoy Network For The Island Of Oahu Utilizing Nested Third Generation Wind Wave Models

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Title: Implementation And Validation Of A Virtual Buoy Network For The Island Of Oahu Utilizing Nested Third Generation Wind Wave Models
Authors: Hansen, Demont
Issue Date: Aug 2005
Abstract: A Virtual Buoy Network (VBN) has been developed for the Island of Oahu. The VBN utilizes nesting of third generation wind wave models to provide daily 180hour nearshore forecast for Oahu. The large scale, open ocean modeling is performed by a global implementation of WaveWatch3 (WW3), that duplicates the operational model of the National Oceanographic and Atmospheric Administration (NOAA). Boundary conditions for a Hawaii regional WW3 implementation are obtained from the global model. Regional effects such as island shadowing are captured in the Hawaii regional model. Boundary conditions for a Simulating WAves Nearshore (SWAN) model for the Island of Oahu are obtained from the Hawaii regional model. Output from the Oahu SWAN model at specified locations is post-processed and formatted, allowing for several useful methods of data visualization and analysis. Evaluation of model performance for the north and east shores of Oahu includes comparison and analysis of wave characteristics and spectra at two University of Hawaii maintained directional buoys, namely the Waimea and Mokapu buoys that face predominantly north and east respectively, during a two week period in March. Data from the Ocean and Resources Engineering (ORE) maintained Kilo Nalu Marine Observatory during a one-week period in May provides similar model performance analysis for the south shore of Oahu. Results of this analysis indicate that the nested model setup agrees sufficiently with measurements to provide valuable nearshore forecast.
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Appears in Collections:M.S. - Ocean and Resources Engineering

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