NASA NSCAT Project

The NASA Scatterometer (NSCAT) Level 2.5 high-resolution reduced MGDR contains only wind vector data (sigma-0 is excluded) in 25 km wind vector cell (WVC) swaths which contain daily data from ascending and descending passes. Wind vectors are accurate to within 2 m/s (vector speed) and 20 degrees (vector direction). Wind vectors are not considered valid in rain contaminated regions; rain flags and precipitation information are not provided. Data is flagged where measurements are either missing or ambiguous. In the presence of land or sea ice winds values are set to 0. Wind vectors are processed...美国国家航空航天局散射计（NASA Scatterometer, NSCAT）2.5级高分辨率精简任务网格数据记录（reduced MGDR）仅包含25千米风矢量单元（Wind Vector Cell, WVC）条带内的风矢量数据（已剔除后向散射截面σ⁰（sigma-0）数据），该条带涵盖升轨与降轨的逐日观测数据。风矢量的测量精度为：矢量速度误差不超过2米/秒，矢量方向误差不超过20°。受降雨污染的区域内，风矢量不被认定为有效数据，且未提供降雨标记与降水信息。当观测数据存在缺失或模糊情况时，将对其予以标记。若观测区域存在陆地或海冰，对应风速值将被置为0。风矢量数据经处理……