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Effects of Winds, Tides, and Storm Surges on Ocean Surface Waves in the Japan/East Sea. Shuyi S. Chen and Wei Zhao RSMAS/University of Miami Cheryl Ann Blain NRL/Stennis Space Center. Objectives.
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Effects of Winds, Tides, and Storm Surges on Ocean Surface Waves in the Japan/East Sea Shuyi S. Chen and Wei Zhao RSMAS/University of Miami Cheryl Ann Blain NRL/Stennis Space Center
Objectives • To understand the interactive processes of the ocean-atmosphere system in the Japan/East Sea (JES) region, especially the effects of the atmospheric forcing associated with the wintertime cold-air outbreak events which are modulated strongly by the complex coastal topography.
Atmosphere-Wave-Ocean Coupling • Atmospheric surface forcing • Wind-induced ocean surface waves • Oceanic response and feedback
Models MM5 (atmosphere) • non-hydrostatic, 28 vertical levels, triple nests with grid spacing of 45, 15, 5 km. WAVEWATCH III (surface wave) • 4-D Spectrum Model [(x, y), (k, q)] • 1/12 degree grid spacing • 25 frequency bands • 48 directional frequency bands(evenly spaced by 7.5o) ADCIR-2DDI (hydrodynamic) • finite element, 3 km (coastal) – 70 km (deep ocean) • tidal potential and elevations at open boundary
NSCAT MM5 ECMWF
NCEPSST PFSST-NCEPSST PFSST
Non-Storm Storm
Conclusions • Surface waves are most sensitive to spatial and temporal resolutions of the atmospheric forcing. • Tides and storm surges can have a significant impact on the waves near shores when water depth decrease sharply.