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| Titel |
High-resolution wave model validation over the Greek maritime areas |
| VerfasserIn |
N. Mazarakis, V. Kotroni, K. Lagouvardos, L. Bertotti |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 11 ; Nr. 12, no. 11 (2012-11-21), S.3433-3440 |
| Datensatznummer |
250011200
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| Publikation (Nr.) |
 copernicus.org/nhess-12-3433-2012.pdf |
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| Zusammenfassung |
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 BOLAM 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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