NASA AQUARIUS SAC-D Project

The version 5.0 Aquarius CAP Level 2 product contains the fourth release of the AQUARIUS/SAC-D orbital/swath data based on the Combined Active Passive (CAP) algorithm. CAP is a P.I. produced dataset developed and provided by JPL. This Level 2 dataset contains sea surface salinity (SSS), wind speed and wind direction data derived from 3 different radiometers and the onboard scatterometer. The CAP algorithm simultaneously retrieves the salinity, wind speed and direction by minimizing the sum of squared differences between model and observations. The main improvements in CAP V5.0 relative to the ...5.0版宝瓶座（Aquarius）CAP二级产品，包含基于联合主动被动（Combined Active Passive，CAP）算法的第四版Aquarius/SAC-D轨道条带数据。CAP是由首席研究员（Principal Investigator, P.I.）产出、喷气推进实验室（Jet Propulsion Laboratory, JPL）研发并提供的数据集。该二级数据集涵盖由3台不同辐射计及星载散射计反演得到的海表盐度（sea surface salinity, SSS）、风速与风向数据。CAP算法通过最小化模型模拟值与实测观测值间的残差平方和，可同时反演获取盐度、风速及风向信息。CAP V5.0相较于此前版本的主要改进为……