Comparison of wind and wave measurements and models in the Western Mediterranean Sea

Ardhuin, Fabrice; Bertotti, Luciana; Bidlot, Jean‐Raymond; Cavaleri, Luigi; Filipetto, Valentina; Lefèvre, Jean‐Michel; Wittmann, Paul A.

doi:10.1016/j.oceaneng.2006.02.008

Cited by 134 publications

(83 citation statements)

References 13 publications

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“…4b). In general, the model results underestimate the data from the buoys, particularly the largest wave heights, and similar outcomes have already been highlighted by Ardhuin et al (2007) and Korres et al (2011). In the period considered, the maximum daily average wave height was always lower than 6 m, and 95% of wave heights came between 0.2 and 2 m for both measured and modelled data, with an average value of 0.8 m for measurements and 0.7 m for model results.…”

Section: Impact Of the Coupled System On Wavessupporting

confidence: 76%

“…In a semienclosed basin like the Mediterranean Sea, where the windsea strongly determines the shape of the wave spectrum, better improvements in the wave field predictions could be achieved by using higher resolution winds. This is evidenced by Ardhuin et al (2007) who demonstrate that different forcing winds produce larger wave differences than using different wave models.…”

Section: Impact Of the Coupled System On Wavesmentioning

confidence: 93%

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Coupling hydrodynamic and wave models: first step and sensitivity experiments in the Mediterranean Sea

et al. 2017

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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°horizontal resolution and are forced by ECMWF 1/4°h orizontal resolution atmospheric fields. The models are twoway 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 (2009Five-year ( -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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Section: Impact Of the Coupled System On Wavessupporting

confidence: 76%

Section: Impact Of the Coupled System On Wavesmentioning

confidence: 93%

Coupling hydrodynamic and wave models: first step and sensitivity experiments in the Mediterranean Sea

et al. 2017

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“…The above results are satisfactory because they are in agreement with similar studies carried out in the Mediterranean Sea. Ardhuin et al (2007) compared the measurements from an extended network of buoys, in the western part of the Mediterranean, for a two-month period with the model results from WAM at a resolution of 0.1 deg and found a mean best-fit slope equal to 0.95 and a mean scatter index equal to 0.35. These values are very close to the values found in the present study and shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…This fact has brought to investigate and study more deeply the meteo-oceanographic features that characterize the area. An important study investigated the forecast accuracy of wave models in the western Mediterranean, comparing the wind and wave forecasts from various models with buoy measurements and satellite data (Ardhuin et al, 2007). In a more recent study, a modified version of WAM4 and WW3 models was applied in hindcast mode to simulate the wave regime in the Mediterranean Sea for a 2-yr evaluation period (Korres et al, 2011 Bertotti et al (2012) have studied the performance of seven different wind-wave systems during the Klaus storm that hit Spain and entered the western Mediterranean on January 2009.…”

Section: Introductionmentioning

confidence: 99%

High-resolution wave model validation over the Greek maritime areas

Mazarakis

Kotroni

Lagouvardos

et al. 2012

Nat. Hazards Earth Syst. Sci.

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Abstract. The increasing maritime activity can be seriously affected by severe weather and sea conditions. To avoid serious damages to ships, marine structures and humans, a good weather and wave forecast is of primary importance. In general the meteorological and the wave models are used to produce forecasts at large scale like the global or the medium-size inner seas. For much smaller environments like the Greek maritime areas, characterized by complicated features like the orography and the presence of islands, the modelisation becomes a not simple task.This study is devoted to the validation of the performance of the WAM wave model over the Ionian and Aegean Seas. The period of validation refers to the first 12 months of operational use of the model at the National Observatory of Athens. The wave model is applied at a resolution of 1/16 degrees and is driven by the 10 m wind, produced by the BO-LAM meteorological model operationally run over the same area. Two different sources of data have been used for the verification of the model results. The first dataset is provided by a network of buoys deployed over the Greek maritime areas and the second consists of altimeter data, provided by the OSTM/Jason-2 satellite platform. Although the study area is characterized by complex topography and a large number of islands, the implementation of the WAM model provides very encouraging results. In general, with the exception of the two buoys located in the Ionian Sea, the WAM model tends to underestimate the wave energy in the region of the Aegean Sea. The comparison with the altimeter data shows that the model has a tendency to overestimate the height for waves lower than 2.5 m and to underestimate the waves higher than 3 m.

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“…Here we move to a less safe ground, especially for the wind speed. Indeed, many previous verifications, see among others The Medatlas Group (2004), Ardhuin et al (2007), and Bertotti and Cavaleri (2008), lead to the conclusion that, while the Hs altimeter measurements, when properly corrected, are highly reliable, the U data in the Mediterranean are generally underestimated. The specification for the area stems from the fact that (see Gommerginger et al, 2002) the wave conditions do affect the altimeter wind speed measurements, and the general wave conditions in an inner sea, as our present area of interest, are different from the ones in the oceans where the satellite instruments have generally been calibrated.…”

Section: Discussionmentioning

confidence: 96%

Large and small scale wave forecast in the Mediterranean Sea

Bertotti

Cavaleri

2009

Nat. Hazards Earth Syst. Sci.

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Abstract. We describe the implementation of an operational high resolution wind and wave forecasting system in the Mediterranean Sea, and then on a limited area centred on the south-east part of Italy, covering parts of the Adriatic and the Ionian seas. We analyse the performance at the two different resolutions during the first four months of operation, using the wind and wave data provided by the QuikSCAT scatterometer, and the Jason and Envisat altimeters. Useful accurate forecasts are found up to 72 h range, the maximum operational one. As expected, we find that the limited area models outperform both the wind and wave global or larger scale model results. However, we still find an appreciable underestimate by the models for surface wind speed and hence wave height, often concentrated on specific events.

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Comparison of wind and wave measurements and models in the Western Mediterranean Sea

Cited by 134 publications

References 13 publications

Coupling hydrodynamic and wave models: first step and sensitivity experiments in the Mediterranean Sea

Coupling hydrodynamic and wave models: first step and sensitivity experiments in the Mediterranean Sea

High-resolution wave model validation over the Greek maritime areas

Large and small scale wave forecast in the Mediterranean Sea

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