HY-2A卫星微波辐射计海面盐度反演-海洋预报

HY-2A卫星微波辐射计海面盐度反演

单位：1. 南方海洋科学与工程广东省实验室, 广东广州 511458;
2. 中国海洋大学海洋与大气学院, 山东青岛 266100;
3. 国家卫星海洋应用中心, 北京 100081;
4. 自然资源部空间海洋遥感与应用重点实验室, 北京 100081;
5. 国家海洋环境预报中心, 北京 100081

关键词：微波辐射计 HY-2A卫星海面盐度

分类号：P731.12

出版年·卷·期（页码）：2022·39·第二期（14-19）

摘要：

基于我国自主海洋微波探测卫星HY-2A卫星的数据，通过分析其微波辐射计C和X波段在同一区域反射率的区别，使用辐射传输模型和非线性反演计算获得海面反射率校准结果，有效改善了海面盐度的反演结果，补充了现有L波段海面盐度探测的不足。利用WOA09盐度数据，对HY-2A卫星反演得到的海面盐度结果进行评估，均方根误差为0.41 psu。

Based on the observation of microwave satellite HY-2A developed by China, the difference between the reflectivity of C-band and X-band of the microwave radiometer onboard HY-2A in the same area is analyzed, and the results of retrieving sea surface salinity (SSS) is significantly improved using the sea surface reflectivity calibrated by the radiative transfer model and nonlinear retrieval algorithm. That method effectively supplement the insufficiency of the existing L-band in detecting the SSS. The SSS retrieved from the HY-2A is evaluated using the salinity data of the WOA09, and the results show that the RMSE is 0.41 psu.

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