Global Significant Wave Height Level 4 Model-Altimeter Fusion

The dataset contains global gridded data of significant wave height (SWH) in equal latitude and longitude. This data is constructed by integrating significant wave height data from numerical wave models with remote sensing observations from global ocean dynamic satellites. The temporal resolution is 6 hours, and the spatial resolution is 0.25°, with global coverage. The satellites integrated include the HY2B, HY2C, and HY2D radar altimeters from China's HY-2 series satellites, the wave spectrometer along-track observations from the China-France Oceanography Satellite (CFOSAT), and the along-track observations from the Jason-3 and SARAL radar altimeters. The fusion time window is ±1 hour, with an influence spatial radius of 300 km. The dataset file also provides gridded significant wave height data both before and after the fusion of satellite observations, with variable names SWH_Model and SWH_SAT_Model, respectively.本数据集包含全球等经纬度格网化的有效波高（Significant Wave Height, SWH）数据。该数据集通过将数值波浪模型的有效波高数据与全球海洋动力卫星的遥感观测数据融合构建而成。其时间分辨率为6小时，空间分辨率为0.25°，实现全球覆盖。所融合的卫星数据包括中国HY-2系列卫星的HY2B、HY2C、HY2D雷达高度计数据、中法海洋卫星（China-France Oceanography Satellite, CFOSAT）的波浪光谱仪沿轨观测数据，以及Jason-3与SARAL雷达高度计的沿轨观测数据。融合时间窗口设置为±1小时，影响空间半径为300千米。数据集文件还提供了卫星观测融合前后的格网化有效波高数据，对应的变量名分别为SWH_Model与SWH_SAT_Model。