ABSTRACT Different surface wind-stress products over the global ocean were validated by comparing with in-situ measurements from moored buoys, and by inter-comparing among them. The products are ones constructed from satellite observations by microwave scatterometers and radiometers, and reanalysed ones by data assimilation and numerical models. Comparisons with buoy measurements revealed that the Cross-Calibrated Multi-Platform Version 2 (CCMP v2.0) has the lowest positive bias, the smallest root mean square error (RMSE) and the largest correlation coefficient in this inter-comparison, meaning that the CCMP v2.0 gives the best performance. Inter-comparisons among the different wind-stress products exhibited that the meridional wind-stress data of the National Centre for Environmental Prediction/National Centre for Atmospheric Research (NCEP/NCAR) are not different in the subtropical region from those of other ones, and zonal and meridional wind-stress data of the National Centre for Environmental Prediction/Climate Forecast System Reanalysis (NCEP/CFSR) have relatively low values in the westerly region. In the zonal-spectral analysis, we found that the zonal wind-stress/wind-vector data from the Institut Français de Recherche pour la Recherche et l’Exploitation de la Mer (IFREMER) have short wave-like oscillations. Thus, the surface wind and wind-stress data in IFREMER products have been well affected by spatial resolution of background data used in their gridding procedure. We also investigated the spatial characteristics of wind-stress curl fields for the different data sets, and found that there are differences between the CCMP v2.0 and Japanese Ocean Flux Data sets with Use of Remote Sensing Observations Version 3 (J-OFURO3) which are characterized by spike-like features in the equatorial Pacific where there are the Tropical Atmosphere Ocean and the TRIangle Trans-Ocean buoy Network (TAO/TRITON) buoys. These features were spatially correlated with buoy locations, which suggests that the reliability of the CCMP v2.0 products is governed by buoy locations in this region.

中文翻译：

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海面风应力不同全球数据集的验证

摘要 通过与系泊浮标的现场测量进行比较，并通过它们之间的相互比较，验证了全球海洋上不同的表面风应力产品。产品是通过微波散射计和辐射计的卫星观测构建的产品，以及通过数据同化和数值模型再分析的产品。与浮标测量结果的比较显示，交叉校准的多平台版本 2 (CCMP v2.0) 具有最低的正偏差、最小的均方根误差 (RMSE) 和最大的相关系数，这意味着CCMP v2.0 提供最佳性能。不同风压产品之间的对比表明，国家环境预报中心/国家大气研究中心（NCEP/NCAR）的经向风应力数据在亚热带地区与其他地区的经向风应力数据没有差异，并且国家环境预测/气候预报系统再分析中心（NCEP/CFSR）的纬向和经向风应力数据在西风地区的值相对较低。在纬向光谱分析中，我们发现法国研究与海洋开发研究所 (IFREMER) 的纬向风应力/风矢量数据具有短波状振荡。因此，IFREMER 产品中的地表风和风应力数据受到其网格化程序中使用的背景数据的空间分辨率的良好影响。我们还研究了不同数据集的风应力旋度场的空间特征，发现 CCMP v2.0 与使用遥感观测版本 3 (J-OFURO3) 的日本海洋通量数据集之间存在差异。以赤道太平洋的尖峰状特征为特征，那里有热带大气海洋和三角跨洋浮标网络（TAO/TRITON）浮标。这些特征在空间上与浮标位置相关，这表明 CCMP v2.0 产品的可靠性受该地区浮标位置的控制。0 和日本海洋通量数据集使用遥感观测第 3 版 (J-OFURO3)，其特征是赤道太平洋的尖峰状特征，那里有热带大气海洋和三角跨洋浮标网络 (TAO/ TRITON) 浮标。这些特征在空间上与浮标位置相关，这表明 CCMP v2.0 产品的可靠性受该地区浮标位置的控制。0 和日本海洋通量数据集使用遥感观测第 3 版 (J-OFURO3)，其特征是赤道太平洋的尖峰状特征，那里有热带大气海洋和三角跨洋浮标网络 (TAO/ TRITON) 浮标。这些特征在空间上与浮标位置相关，这表明 CCMP v2.0 产品的可靠性受该地区浮标位置的控制。