Influence of bottom friction on sea surface roughness and its impact on shallow water wind wave modeling

Using a selected subset of the measured data obtained in shallow waters near Vindeby, Denmark, during RASEX (Riso Air-Sea Experiment), the role of bottom friction dissipation in predicting wind waves (not swell) is assessed with a third-generation numerical wind wave model. The RASEX measurement site is located in relatively shallow waters (depths of about 3 to 4 m) in an area where the waves are predominantly fetch limited (i.e., maximum fetch of about 20 km).