Assessment of Offshore Wave Energy Resources in Taiwan Using Long-Term Dynamically Downscaled Winds from a Third-Generation Reanalysis Product

摘要: In this study, long-term wind fields during 1991–2010 from the Climate Forecast System Reanalysis (CFSR) were dynamically downscaled over Taiwan and its offshore islands at a 5 km horizontal resolution using Weather Research Forecasting (WRF) model. Simulations of 10 m (above sea level) winds served as atmospheric forcing for driving fully coupled wave-circulation The states waters surrounding hindcasted to evaluate wave energy resources optimal hotspots. This study reveals that southeastern Central Strait exhibited highest mean power density (WPD), exceeding 20 kW/m. annual WPD, incidence hourly WPD greater than or equal 4 kW/m, monthly variability index coefficient variation indicated areas located between Green Island Orchid (OH_1), southeast (OH_2), south Hengchun Peninsula (OH_3), north Penghu Islands (OH_4) hotspots deploying converters. most energetic months October OH_1 OH_2 November OH_3 OH_4, while was weak March June OH_1, in May OH_4. direction is prevailingly east-northeast nearly northeast These phenomena reveal induced primarily by (winter) monsoon. exploitable estimated be 158.06, 182.89, 196.39 101.33 MWh/m OH_2, respectively.