Special Issue (Ocean Engineering)Paper
LONG-TERM VARIABILITY OF OCEAN WAVES IN THE GLOBE AND AROUND JAPAN USING ERA5
2023 Volume 79 Issue 18 Article ID: 23-18006
Details
2023 Volume 79 Issue 18 Article ID: 23-18006
In this study, we analyze the characteristics of the long-term variability of waves globally and around Japan using ERA5, which provides long-term global wave estimation data from 1959 to 2022. The accuracy of ERA5 wave height estimation around Japan was verified, and the distribution of probability wave heights was calculated globally and for the sea area around Japan. We also determined the secular trend of annual maximum wave heights.
Although ERA5 tended to underestimate wave heights, the overall estimation accuracy was high, and ERA5 was judged to be a practical wave database. The distribution of the estimated 50-year probability wave heights for both globally and for the area around Japan was generally consistent with the results of previous studies. The annual maximum wave heights tended to increase globally and also around Japan on the Pacific Ocean side and the East China Sea area.
