scholarly journals Comparison Between Third- and Second-Generation Ocean Wave Models

1998 ◽  
Author(s):  
Steven M. Bratos
Keyword(s):  
Second Generation ◽  
Ocean Wave ◽  
Wave Models

Uncertainty of Ocean Wave Hindcasts Due to Wind Modeling

1995 ◽  
Vol 117 (4) ◽  
pp. 294-297 ◽  
Author(s):  
J. C. Teixeira ◽  
M. P. Abreu ◽  
C. Guedes Soares
Keyword(s):  
Wind Speed ◽  
Relative Error ◽  
Wave Height ◽  
Significant Wave Height ◽  
Second Generation ◽  
Wave Model ◽  
Ocean Wave ◽  
Wind Fields ◽  
Significant Wave ◽  
Wind Input

Two wind models were developed and their results were compared with data gathered during the Wangara experiment, so as to characterize their uncertainty. One of the models was adopted to generate the wind fields used as input to a second generation wave model. The relative error in the wind speed was considered in order to assess the uncertainties of the predictions or the significant wave height. Different time steps for the wind input were also used to determine their effect on the predicted significant wave height.

scholarly journals Matching of coastal and open ocean wave models in a Mesoscale application over Lake Erie

2009 ◽  
Vol 47 (3) ◽  
pp. 184-203 ◽  
Author(s):  
Roop Lalbeharry ◽  
Arno Behrens ◽  
Heinz Guenther ◽  
Laurence Wilson
Keyword(s):  
Lake Erie ◽  
Open Ocean ◽  
Ocean Wave ◽  
Wave Models

Microwave scatter and sea state estimation: Two-scale ocean wave models

1978 ◽  
Vol 13 (1-4) ◽  
pp. 107-118 ◽  
Author(s):  
Robert O. Harger ◽  
David M. Levine
Keyword(s):  
State Estimation ◽  
Ocean Wave ◽  
Sea State ◽  
Wave Models

Ocean Surface Modeling in Vary Wind Field

2011 ◽  
Vol 480-481 ◽  
pp. 1452-1456
Author(s):  
Li Bo ◽  
Zhong Yi Li ◽  
Yue Jin Zhang
Keyword(s):  
Wind Field ◽  
Wave Spectrum ◽  
Wave Model ◽  
Ocean Surface ◽  
Ocean Waves ◽  
Surface Modeling ◽  
Ocean Wave ◽  
Statistical Characteristics ◽  
Linear Wave ◽  
Wave Models

In ocean surface modeling a popular method of wave modeling is making use of ocean wave spectrum, which is a physical wave model and based on linear wave theories. The ocean waves produced in this way can reflect the statistical characteristics of the real ocean well. However, few investigations of ocean simulation have been focused on turbulent fluid under vary wind field in this way, while all ocean wave models are built with the same wind parameters. In order to resolve the problem of traditional method, we proposed a new method of dividing the ocean surface into regular grids and generating wave models with different parameters of wind in different location of view scope. The method not only preserves the fidelity of statistical characteristics, but also can be accelerated with the processing of GPU and widely used in VR applications.

Coupled Ocean-Wave Models for Galway Bay

2020 ◽  
Author(s):  
Clement Calvino ◽  
Frederic Dias ◽  
Tomasz Dabrowski
Keyword(s):  
Ocean Wave ◽  
Wave Models

Modelling the upper ocean dynamics of the north-west European shelf during storm events with the UK Met Office ocean-wave prediction system

2020 ◽  
Author(s):  
Diego Bruciaferri ◽  
Marina Tonani ◽  
Huw W. Lewis ◽  
John Siddorn ◽  
Robert R. King ◽  
...  
Keyword(s):  
Coupled System ◽  
Ocean Dynamics ◽  
Ocean Wave ◽  
Storm Events ◽  
North West ◽  
Surface Ocean ◽  
European Shelf ◽  
Wave Models ◽  
The Uk ◽  
Wave Induced

<p>Accurate modelling of the surface ocean dynamics is of paramount importance for many human activities such as search-and-rescue operations and offshore oil and wind power industry. During sea storm events, large waves can have a strong control on the surface ocean currents, making wave-current interaction a leading order process in the uppermost part of the ocean. North-west (NW) European shelf seas can be affected by extremely severe storms, increasing the need for precise predictions of the surface ocean dynamics.   </p><p>In this study we assess the impact of using a coupled ocean-wave modelling system to simulate the upper ocean dynamics of the NW European shelf during five storm events occurred in Winter 2016. Two versions of the eddy-resolving (1.5 km resolution) UK Met Office ocean-wave operational prediction system are compared: the first one uses the ocean and wave models in uncoupled mode; the second one is a coupled system including three ocean-wave interactions, namely the Stokes-Coriolis force, the modification of the surface stress by wave growth and dissipation and a wave height dependent ocean surface roughness. The assessment is carried out using the ocean currents and the Stokes’ drift reproduced by the two modelling systems to simulate the lagrangian trajectories of a number of iSphere (surface) and SVP (centered at 15m) drifters affected by the storms. The simulated trajectories are then compared with the observed drifters’ tracks. Some drifter trajectories representative of offshore, near the shelf-break and near the coast regimes have also been simulated switching on only one ocean-wave interaction per time, to better understand the relative impact of the three components we considered in the ocean-wave coupling.</p><p>Numerical results show that in the case of iSphere drifters, the trajectories simulated using ocean and wave-induced currents from the coupled system are much more accurate than the one obtained with the uncoupled system, especially near the shelf and the coasts, highlighting the importance of including wave feedback in the momentum equations of the ocean model.  For SVP drifters the effect of the ocean-wave coupling is less evident. This is probably due to the fact that the wave-current interactions considered in the current implementation of the coupled system mainly act in the proximity of the ocean surface, pointing out the need of including wave-induced effects able to influence also the sub-surface dynamics of the water column. However, results also seem to indicate that the reduced impact of the coupling might be related to some difficulties experienced by the ocean and wave models in properly representing some of the physical processes characterizing extreme storm events.</p><p>In conclusion, this study proves the importance of using a coupled ocean-wave system when simulating the ocean dynamics during storm events but also indicates where research efforts must be spent for improving the skills of the UK Met Office forecasting system.</p>

Sign in / Sign up

Export Citation Format

Share Document