Aquarius Official Release Level 3 Rain-flagged Sea Surface Salinity Standard Mapped Image Ascending Seasonal Climatology Data V5.0

Aquarius Level 3 sea surface salinity (SSS) rain-flagged standard mapped image data contains gridded 1 degree spatial resolution SSS averaged over daily, 7 day, monthly, and seasonal time scales. This particular data set is the seasonal climatology, Ascending rain-flagged rain-flagged sea surface salinity product for version 5.0 of the Aquarius data set. Only retrieved values for Ascending passes 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.Aquarius 3级海表盐度（sea surface salinity, SSS）带降雨标记的标准制图图像数据集，包含空间分辨率为1度的网格化海表盐度数据，该数据基于日、7日、月及季节时间尺度进行平均计算。本数据集为Aquarius数据集5.0版本的季节气候态升轨带降雨标记海表盐度产品，仅使用升轨过境的反演值生成。Aquarius仪器搭载于AQUARIUS/SAC-D卫星，该卫星是美国国家航空航天局（National Aeronautics and Space Administration, NASA）与阿根廷国家空间活动委员会（Comision Nacional de Actividades Espaciales, CONAE）的合作项目。该仪器包含三台以推扫式排列的辐射计，其相对于轨道阴影面的入射角分别为29°、38°和46°。各波束的地面足迹尺寸依次为：76千米（沿轨向）×94千米（交轨向）、84千米×120千米以及96千米×156千米，总交轨幅宽达370千米。这些辐射计分别在1.413 GHz频段测量各自水平极化（TH）与垂直极化（TV）下的亮温。另有一台工作于1.26 GHz频段的散射计，用于测量每个足迹内的海洋后向散射，以在盐度反演过程中校正海面粗糙度。该散射计的幅宽约为390千米。