The First Estimation of Multiple Shortwave Radiation Components from the Chinese New-Generation Broadband Sensor (Earth Radiation Measurement-II) Onboard Fengyun-3F Satellite

作者：Xuewei Yan, Tianxing Wang, Wanchun Leng, Lin Chen, Wanchun Zhang · 发表于：Journal of Remote Sensing · 年份：2025 · DOI：10.34133/remotesensing.0486 · 被引用次数：5 · 研究领域：Cryospheric studies and observations、Arctic and Antarctic ice dynamics、Precipitation Measurement and Analysis

Fengyun-3F (FY-3F) represents the cutting edge in polar-orbiting meteorological satellite technology, developed by China. It possesses enhanced comprehensive observational capabilities, facilitating continuous optical and microwave imaging, as well as detailed vertical profiling of the Earth’s atmosphere. One of the key features of FY-3F satellite lies in its deployment of an advanced broadband sensor, Earth Radiation Measurement-II (ERM-II). However, there is still a lack of an effective algorithm to derive shortwave radiation components based on the improved measurements of ERM-II. This study attempts to utilize ERM-II data to simultaneously derive top of atmosphere (TOA) and surface shortwave radiation components, including TOA albedo, surface shortwave downward radiation (SWDR), and photosynthetically active radiation (PAR), based on a look-up table (LUT) scheme. In the absence of direct measurements, the estimated TOA albedo was compared with the Clouds and the Earth’s Radiant Energy System (CERES) Single Scanner Footprint (SSF) products, yielding a high correlation, with a correlation coefficient ( R 2 ) of 0.87, bias of 0.0090, and root mean square error (RMSE) of 0.0418. SWDR and PAR were validated against in situ measurements from 21 sites within Baseline Surface Radiation Network (BSRN) and Surface Radiation Budget Network (SURFRAD), with R 2 of 0.89 and 0.83, biases of −10.5 and −8.0 W/m 2 , and RMSEs of 104.8 and 48.1 W/m 2 , respectively. To examine the theoretic...