significant wave height (SWH) contributes greatly to coastal and offshore engineering
activities and mitigation of marine disasters. In this study, the annual spatiotemporal
variability of the SWH in the South China Sea (SCS) and the return periods for six locations
are evaluated based on ERA5 wave reanalysis in a long time period (1950–2020). Long-
term trends are estimated by using a popular non-parametric method, the Theil-Sen …