Evaluation of Sea Surface Winds and Waves Retrieved From the Chinese HY-2B Data

The wind and wave derived from the scatterometer altimeter on board Chinese Haiyang-2B (HY-2B) satellite were systemically evaluated in this study. analysis of matchups between Advanced Scatterometer (ASCAT) winds HY-2B with speeds up to 25 m/s showed a 0.78 Root-Mean-Square Error (RMSE) 0.97 Correlation (COR), superior 1.2 RMSE 0.93 COR HY-2B. Simultaneously, significant heights (SWH) measured collocated measurements Jason-3 altimeter. Analysis calibration concluded that observations performed well at low-to-moderate sea states, yielding an 0.29 m for SWH 0.98 geophysical data records (GDR) after systematic corrections using MOE determination method. In particular there 20 typhoons occurring China Seas during 20192020. evaluation high when compared those (SWH > 7 m) Jason-3/WW3 indicated is accurate, 0.87 m/0.68 0.85 SWH. Finally, statistical speed was investigated through waves simulated WAVEWATCH-III (WW3) / HYbrid Coordinate Ocean Model (HYCOM) current surface temperature (SST). currents below 1 less than 3 m, while term SST should be included retrieval. addition, states likely affect accuracy