The agreement in wave height is generally good; however, the hindcast model occasionally
underestimates low-energy swell conditions when the directional agreement is also poor.
February 1999
NDBC Buoy
(bndrywave)
3.5
WIS Data
3
(total) Pt 251
2.5
NDBC Buoy
2
1.5
1
0.5
0
0
100
200
300
400
500
600
700
800
Hour
Fig. 5. Hindcast versus measured offshore wave height, February 1999.
February 1999
180
135
NDBC
Buoy
90
WIS (total)
45
Pt 251
0
-45
-90
-135
-180
0
100
200
300
400
500
600
700
800
Hour
Fig. 6. Hindcast versus measured offshore peak wave direction, February 1999.
Nearshore Wave Model Validation. The directional spectral wave model STWAVE
transformed the wave spectra generated from Buoy 44025 at the offshore boundary of the
regional grid to the location (grid point 50, 47) of the Shinnecock Inlet wave gauge
ADVO1. Hindcast wave spectra were transformed by STWAVE from the offshore
boundary of the second (truncated) regional grid to the same gauge (grid point 36, 47).
Figure 7 illustrates the validation and the improvement in model results if finer resolution
of the bottom feature is accounted for in the wave transformation. In all simulations the
7