Papers by Luciana Bertotti
13 COSMO general …, Jan 1, 2011
Sažetak: In order to account for the full interaction between the atmosphere and the wind generat... more Sažetak: In order to account for the full interaction between the atmosphere and the wind generated ocean waves, the COSMO model has been coupled to the WAM model. The coupling has been done in terms of a new communication and interpolation library that accounts for the different ways of grid partitioning in the two models. The communication library accommodates also communication tools for a further coupling to a circulation model on structured meshes. Having at disposal N processors, the technique of parallelization ...
Since the '80s a tidal forecasting system is operational in the Adriatic Sea, with focus in t... more Since the '80s a tidal forecasting system is operational in the Adriatic Sea, with focus in the area offshore the Veince lagoon and at the town itself. The system provides valuable information several days in advance, with accuracy of the order of 10 cm. or less at one or two day distance. Since the '80s it was also realized that,
Journal of Geophysical Research: Oceans, 2015
Coastal Engineering 1994, 1995
Coastal Engineering 1992, 1993
An advanced, third-generation wave model has been repeatedly applied to the Mediterranean Sea. We... more An advanced, third-generation wave model has been repeatedly applied to the Mediterranean Sea. We have studied the accuracy of the results and the factors that control it. The grid resolution, when less than 0.5 ø , is shown to have in general negligible effect in the open sea. The related accuracy of description of the coastal border can have a relevant effect on the wave field on the side and on the wake of the coastal details, for a distance of a few grid points. The difficulty of correctly evaluating the wind in the Mediterranean basin is dramatically shown by comparing the results obtained using wind fields with different resolution. The crucial role of the orography in shaping the wind fields and the need for higher-resolution models is established. It is found that owing to the strong dependence of wave height on wind speed, for resolution coarser than 70 km the loss of accuracy of the wind fields, even if meteorologically acceptable, makes them useless for an efficient evaluation of the wave conditions. The exception, explained by the local absence of relevant mountain ridges, is the case of a southerly wind in the eastern Mediterranean. The accuracy of wave forecasting is obtained by comparing analysis and forecast fields for a very severe storm. In connection with the preferential west to east flow of most of the Mediterranean storms, and with the scarcity of information on the Atlantic Ocean, the equality of the meteorological forecast rapidly deteriorates beyond 1 or 2 days of forecast. This leads to an even faster deterioration of the wave forecast, whose practical limits in the western Mediterranean can at present be established at 1 day.
Continuous records of wind speed and direction show a high variability both in the high and low f... more Continuous records of wind speed and direction show a high variability both in the high and low frequency ranges. This variability is usually not considered in the numerical hindcast of a storm. We discuss the related implications for the maximum wave heights and for the values from the statistics of extremes.
Hydrodynamics of Ocean Wave-Energy Utilization, 1986
Ocean Engineering, 2006
We have simulated a number of periods using different resolutions of the ECMWF meteorological mod... more We have simulated a number of periods using different resolutions of the ECMWF meteorological model. Then we have explored how the quality of the surface wind and wave model results varies with the resolution. The comparisons have been done in the oceans and in the Mediterranean Sea, using measured data from buoys and satellite.
Il Nuovo Cimento C, 1982
... (3) --~E = S ~t valid along each single ray. The problem of evaluating the two-dimensional (3... more ... (3) --~E = S ~t valid along each single ray. The problem of evaluating the two-dimensional (3) R. GELCI, H. CASALE and J. VASSAL: Bull. In/or. Comitd Central Oceanogr. ... Page 12. 170 L. CAVALERI and L. BERTOTTI sion suggested by HASSELMAI~N and COLLI~S (Is). ...
Il Nuovo Cimento C, 1994
ABSTRACT
Ocean Wave Modeling, 1985
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Papers by Luciana Bertotti