Applicability analysis of the HY-2D satellite scatterometer sea surface wind field product in the Northwest Pacific region
Based on the Chinese offshore buoy data,the European Centre for Medium-Range Weather Forecasts(ECMWF)fifth-generation global reanalysis data(ERA5),and the MetOp-B satellite scatterometer ASCAT sea surface wind field data,the quality of wind field data from the HY-2D satellite scatterometer inversion is evaluated to analyze its applicability in the Northwest Pacific region.The statistical results show that the HY-2D wind field data are in good agreement with the Chinese offshore buoy data,the ERA5 and ASCAT data.The root-mean-square errors of wind speed against the three data sets are 0.98 m/s,1.23 m/s and 0.58 m/s,and those of wind direction are 18.8°,16.8°and 12.8°,respectively.All of which are lower than 2 m/s and 20°.Comparison of wind vector data from the HY-2D and Chinese offshore buoy data does not reveal a clear relationship between offshore distance and the error.Comparison against the ERA5 and ASCAT data shows that the percentage of the data with wind speed absolute error≤2 m/s and wind direction absolute error≤20°is nearly 90%.In summary,the quality of the HY-2D scatterometer sea surface wind field in the Northwest Pacific region is high enough to satisfy the accuracy requirements of operational applications.
万方数据
维普
