In this paper, X-band ScanSAR Huge Region mode COSMO-SkyMed c Synthetic Aperture Radar (SAR) data have been first used to force wind-wave interaction modeling in a coastal environment. The oceanographic model is based on the Third-Generation Simulating Waves Nearshore (SWAN) model, which is used for sea wave state estimation in coastal and island regions. The model is typycally forced through the Advanced Research Weather Research and Forecast (WRFARW) model data, which give the wind forcing at 1 hour intervals. In this paper, the SWAN model has been forced by using COSMO-SkyMed SAR-based wind speed estimations, which have been retrieved by means of the azimuth cut-off procedure. After comparison with a suitable ground truth provided by ECMWF model data, COSMO-SkyMed SAR-derived wind speeds have been used together with ECMWF wind directions to construct a blended wind product, which has been used to force the wind-wave interaction modeling. The validation has been accomplished with respect to some significant wave storms in the coastal area of Southern Tyrrhenian Sea which are relevant to the winter season of 2010.
SEA WAVE NUMERICAL SIMULATION AND VERIFICATION IN THYRRENIAN COASTAL AREA WITH X-BAND COSMO-SKYMED SAR DATA
BENASSAI, Guido;MIGLIACCIO, Maurizio
2012-01-01
Abstract
In this paper, X-band ScanSAR Huge Region mode COSMO-SkyMed c Synthetic Aperture Radar (SAR) data have been first used to force wind-wave interaction modeling in a coastal environment. The oceanographic model is based on the Third-Generation Simulating Waves Nearshore (SWAN) model, which is used for sea wave state estimation in coastal and island regions. The model is typycally forced through the Advanced Research Weather Research and Forecast (WRFARW) model data, which give the wind forcing at 1 hour intervals. In this paper, the SWAN model has been forced by using COSMO-SkyMed SAR-based wind speed estimations, which have been retrieved by means of the azimuth cut-off procedure. After comparison with a suitable ground truth provided by ECMWF model data, COSMO-SkyMed SAR-derived wind speeds have been used together with ECMWF wind directions to construct a blended wind product, which has been used to force the wind-wave interaction modeling. The validation has been accomplished with respect to some significant wave storms in the coastal area of Southern Tyrrhenian Sea which are relevant to the winter season of 2010.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
