Abstract
Ocean wave database around Japanese islands for 45 years is build based on the meteorological dataset ERA-40, ECMWF 40 Years Re-Analysis. Since the ERA-40 is coarse for the wave hindcasting in the target domain, the mesoscale meteorological model MM5 was applied to evaluate the sea-surface wind at higher resolution; and, the wave model SWAN was employed to compute the long-term wave fields. The computed wave fields were successfully improved by applying the wind fields evaluated with MM5. The comparison of the wave database with the field observed data shows good agreement, and leads to the conclusion that the database is highly accurate.
