The Henetus wave forecast system in the Adriatic Sea

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Section: The Local Evidencesupporting

confidence: 50%

Section: The Local Evidencementioning

confidence: 99%

Brief communication "An extreme meteorological event at the ISMAR oceanographic tower"

Bastianini

Cavaleri

Rocca³

2012

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“…These values are very close to the values found in the present study and shown in Table 2. In another study, Bertotti et al (2011) compared the data measured at the IS-MAR oceanographic tower, located in the northern part of the Adriatic Sea, with the results of the WAM model for a 5-yr period and found statistical results very close to those presented in the present study.…”

Section: Resultsmentioning

confidence: 48%

“…This can be explained by the poor accuracy of altimeter measurements near the coasts. Bertotti et al (2011), who compared the altimeter data from ENVISAT with the results of WAM model for a 5-yr period over the Adriatic Sea, found slightly different results. More precisely, they found that there was a tendency by the model to underestimate the lower wave heights, in fact that it was attributed to the local pattern of the wind field, associated for example with sea breezes.…”

Section: Comparison With Altimeter Datamentioning

confidence: 99%

High-resolution wave model validation over the Greek maritime areas

Mazarakis

Kotroni

Lagouvardos

et al. 2012

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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.

“…They performed multi-decadal hindcasts for the Pacific Ocean, and found that in general, all three models show good skill, with WAVEWATCH III performing slightly better than the other two. For semi-enclosed basin scale modelling, some studies show that wave conditions can be well simulated in serious storm events (Mazarakis et al, 2012;Bertotti et al, 2011;Bertotti and Cavaleri, 2009;Cherneva et al, 2008). However, the quality of the wave model decreases substantially when the wind condition shows strong temporal and spatial gradients.…”

Section: Introductionmentioning

confidence: 99%

A validation of an operational wave and surge prediction system for the Dutch coast

Sembiring

Ormondt

Dongeren

et al. 2015

Abstract. Knowledge of the actual condition of hydrodynamics in the nearshore and coastal area is essential for coastal monitoring activities. To this end, a coastal operational model system can serve as a tool in providing recent and up-to-date, state-of-the-art hydrodynamics along the coast. In this paper, we apply CoSMoS (Coastal Storm Modeling System), a generic operational wave and tide-surge modelling system applied here to predict waves and water levels along the Dutch coast. The CoSMoS application is not limited to storm impact prediction on the Dutch coast, but can also be applied to other coastal hazards such as rip currents and coastal flooding, in other environments. In this paper, we present the set-up of the CoSMoS system and a validation of the wave and surge model, with deep-water wave buoy data and tidal gauge measurements as ground truth validation material. The evaluation is presented as monthly error measures between computed parameters and observed ones. Hindcast results over the whole year of 2009 show that the simulated wave parameters and surge elevation from the CoSMoS are in good agreement with data, with average root mean square (rms) error over the year of 0.14 m for the surge elevation and 0.24 m for the significant wave height. It is noted that there is a tendency of the wave model to underestimate the height of northerly waves with lower frequencies (swell). Additionally, when a wave separation algorithm is applied on the overall spectrum, results show consistent underestimation of the swell component by the model, which for the Dutch coast will mainly come from the north, where the North Sea is open to the Atlantic Ocean. In the proposed model system, the swell boundary can have a significant effect on the simulated wave results, suggesting room for improvement for the swell boundary conditions to the north and the swell propagation within the Dutch Continental Shelf Model. Finally, we show that in forecast mode, CoSMoS can provide reasonably good wave and surge prediction.