A Study on the Retrieval of Radiation Budget Components Using the New Generation Fengyun Meteorological Satellites of China

The new generation of China's Fengyun meteorological satellites (FY-3/4) have demonstrated powerful capabilities for monitoring both the Earth's radiation budget and surface radiation budget. However, deficiencies remain in terms of retrieval algorithms, retrieval accuracy, product types, and spatial completeness. To address these issues, this paper conducts systematic research, developing a series of retrieval algorithms for radiation budget components and preliminarily establishing a methodological framework for retrieving radiation budget components. Corresponding data products have been generated and are freely released both domestically and internationally via the Zenodo platform. The research outcomes fill the gaps in China's Fengyun satellite products, including emissivity products, cloudy-sky land surface temperature products, and cloudy-sky surface longwave radiation component products, thereby laying a foundation for further improving the Fengyun satellite radiation budget product system.