Research Progress and Applications of Polar Sea Ice Products Based on Multi-Source Remote Sensing Payloads of Fengyun Satellites

Fengyun satellites have now developed the capability to retrieve multiple polar sea ice parameters based on active and passive microwave payloads. This includes the operational production and release of four types of polar sea ice products, including the FY-3 MWRI radiometer sea ice concentration, the FY-3E WindRAD scatterometer sea ice edge and type, and the FY-3 GNOS-R sea ice thickness. The monitoring capabilities of Fengyun satellites in the polar regions are continuously improving. This study will systematically introduce the inversion and validation of polar sea ice parameters mentioned above, focusing on the research of sea ice edge and type inversion from the WindRAD scatterometer, which is the world's first dual-frequency, dual-polarization, fan-beam rotating scanning system. The release and application of operational sea ice parameter products from Fengyun satellites can further enhance the polar sea ice monitoring capabilities and provide a scientific and reliable new data source for research related to polar and global climate change, such as climate numerical models and the monitoring of extreme climate events.