Effects of Winds, Tides, and Storm Surges on

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, 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 MM5 Winds/SWH

ECMWF Winds/SWH

MM5 Winds/Wavelength ECMWF Winds/Wavelength

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.

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