Analysis and Prediction of Significant Wave Height in the Beibu Gulf, South China Sea

A series of 40-year significant wave height (SWH) data were extracted from the ERA-Interim set European Center for Medium-Range Weather Forecasts (ECMWF), Beibu Gulf and its adjacent waters in South China Sea 1979 to 2018. After that, first aggregated annual monthly average data. Through analysis, SWH had grown since 1984, reached a level 1995, maximum 1.068 m 2011. The values between April September lower than those other months. Additionally, corresponding analysis on wind speed demonstrated that variation was consistent with 2018, but overall trend increased while decreased. decrease could be attributed weakening East Asian monsoon, westward swell induced by gales occurred northeast resulted increase study area. Finally, multiple sine function decomposition neural network (MSFDNN) employed forecast over next 10 years. predicted results revealed MSFDNN well-performing forecasting SWH.