QSCAT and ADEOS-II / NCEP Blended Ocean Winds (version 1.0)

Ocean surface wind data are derived from spatial blending of high-resolution satellite data from tandem SeaWinds missions (QSCAT and ADEOS-II) and global weather center analyses (NCEP), resulting in high temporal and spatial resolution datasets (6-hourly, and 0.5 by 0.5 degree).

This two-scatterometer blending product is only available for the duration of the ADEOS-II mission (April 10 to October 24 2003). The blending scheme is a variation of the single-scatterometer blending (QSCAT only, ds744.4 [http://rda.ucar.edu/datasets/ds744.4/]): the main difference is a 7.5 hour time-window used for blending versus the sliding 12-hour window in the QSCAT only blending.

Available data products are: the blended product, which consists of QSCAT and ADEOS-II blended with NCEP analyses; and the low-wavenumber analysis field, which is the NCEP analyses splined to the 0.5 by 0.5 degree grid. These fields are available as wind components or as windstress curl. Details of the method are summarized in this document [http://rda.ucar.edu/datasets/ds744.8/docs/Blended_Winds_Summary_doc].

Data file formats and read routines are the same as for QSCAT/NCEP blending (ds744.4).

海洋表面风速数据源自于对高分辨率卫星数据（SeaWinds任务中的QSCAT和ADEOS-II）的空间融合以及全球气象中心分析（NCEP）的综合，从而形成了具有高时空分辨率的数据集（每6小时一次，分辨率为0.5度×0.5度）。此双散射计融合产品仅适用于ADEOS-II任务期间（2003年4月10日至10月24日）。融合方案是对单一散射计融合（仅QSCAT，ds744.4 [http://rda.ucar.edu/datasets/ds744.4/]）的变体：主要区别在于用于融合的时间窗口为7.5小时，相较于仅QSCAT融合中使用的滑动12小时窗口。可用的数据产品包括：融合产品，该产品由QSCAT和ADEOS-II的融合数据与NCEP分析相结合而成；以及低波数分析场，该场是对NCEP分析进行样条插值至0.5度×0.5度网格的结果。这些场可作为风速分量或风应力旋度提供。该方法的具体细节总结在本文档中[http://rda.ucar.edu/datasets/ds744.8/docs/Blended_Winds_Summary_doc]。数据文件格式和读取程序与QSCAT/NCEP融合（ds744.4）相同。