期刊
OCEAN DYNAMICS
卷 67, 期 10, 页码 1293-1312出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10236-017-1087-7
关键词
Mediterranean Sea; Hydrodynamics; Waves; Numerical modelling; NEMO; WaveWatch3
类别
资金
- CMEMS Med-MFC (Copernicus Marine Environment Monitoring Service-Mediterranean Marine Forecasting Centre), Mercator Ocean Service Contract
- RITMARE Flagship Project (National Research Programmes), Italian Ministry of University and Research contract
This work describes the first step towards a fully coupled modelling system composed of an ocean circulation and a wind wave model. Sensitivity experiments are presented for the Mediterranean Sea where the hydrodynamic model NEMO is coupled with the third-generation wave model WaveWatchIII (WW3). Both models are implemented at 1/16 degrees horizontal resolution and are forced by ECMWF 1/4 degrees horizontal resolution atmospheric fields. The models are two-way coupled at hourly intervals exchanging the following fields: sea surface currents and temperature are transferred from NEMO to WW3 by modifying the mean momentum transfer of waves and the wind speed stability parameter, respectively. The neutral drag coefficient computed by WW3 is then passed to NEMO, which computes the surface stress. Five-year (2009-2013) numerical experiments were carried out in both uncoupled and coupled mode. In order to validate the modelling system, numerical results were compared with coastal and drifting buoys and remote sensing data. The results show that the coupling of currents with waves improves the representation of the wave spectrum. However, the wave-induced drag coefficient shows only minor improvements in NEMO circulation fields, such as temperature, salinity, and currents.
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