Aquarius Official Release Level 3 Wind Speed Standard Mapped Image Ascending 7-Day Data V2.0

Aquarius Level 3 ocean surface wind speed standard mapped image data contains gridded 1 degree spatial resolution wind speed data averaged over daily, 7 day, monthly, and seasonal time scales. This particular data set is the 7-Day, Ascending wind speed product for version 2.0 of the Aquarius data set, which is the official first release of the operational data from AQUARIUS/SAC-D mission. Only retrieved values for the Ascending portions of orbits have been used to create this product. The Aquarius instrument is onboard the AQUARIUS/SAC-D satellite, a collaborative effort between NASA and the Argentinian Space Agency Comision Nacional de Actividades Espaciales (CONAE). The instrument consists of three radiometers in push broom alignment at incidence angles of 29, 38, and 46 degrees incidence angles relative to the shadow side of the orbit. Footprints for the beams are: 76 km (along-track) x 94 km (cross-track), 84 km x 120 km and 96km x 156 km, yielding a total cross-track swath of 370 km. The radiometers measure brightness temperature at 1.413 GHz in their respective horizontal and vertical polarizations (TH and TV). A scatterometer operating at 1.26 GHz measures ocean backscatter in each footprint that is used for surface roughness corrections in the estimation of salinity. The scatterometer has an approximate 390km swath.

水星级3海洋表面风速标准映射图像数据集包含以1度空间分辨率网格化的风速数据，该数据按每日、7日、月度和季节时间尺度进行平均。本数据集特指版本2.0的7日上升风速产品，这是AQUARIUS/SAC-D任务操作数据的官方首次发布。仅使用轨道上升部分的检索值创建此产品。水星仪器装载在水星/SAC-D卫星上，该卫星是美国国家航空航天局（NASA）与阿根廷国家太空活动委员会（CONAE）的合作成果。该仪器由三个推进式排列的辐射计组成，相对于轨道阴影侧，其入射角分别为29度、38度和46度。辐射计的光斑尺寸分别为：76公里（沿轨迹）x 94公里（横轨迹）、84公里 x 120公里和96公里 x 156公里，从而形成总横跨370公里的横跨带。辐射计在各自的水平和垂直极化（TH和TV）下测量1.413 GHz的亮度温度。一个工作在1.26 GHz的散射计在每个光斑中测量海洋后向散射，用于在盐度估算中的表面粗糙度校正。散射计的大致横跨带为390公里。