Long-Term and Seasonal Trends in Global Wave Height Extremes Derived from ERA-5 Reanalysis Data

被引:45
作者
Takbash, Alicia [1 ]
Young, Ian R. [1 ]
机构
[1] Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic 3010, Australia
关键词
extreme wave height; extreme value analysis; wave climate; wave model; reanalysis; WIND-SPEED; OCEAN WIND; CLIMATE; DESIGN;
D O I
10.3390/jmse8121015
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
A non-stationary extreme value analysis of 41 years (1979-2019) of global ERA5 (European Centre for Medium-Range Weather Forecasts Reanalysis) significant wave height data is undertaken to investigate trends in the values of 100-year significant wave height, Hs100. The analysis shows that there has been a statistically significant increase in the value of Hs100 over large regions of the Southern Hemisphere. There have also been smaller decreases in Hs100 in the Northern Hemisphere, although the related trends are generally not statistically significant. The increases in the Southern Hemisphere are a result of an increase in either the frequency or intensity of winter storms, particularly in the Southern Ocean.
引用
收藏
页码:1 / 16
页数:16
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