Shortwave Radiation Budget Products from GOES-R Series ABI IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium

Two shortwave (SW) radiation budget products, downward SW radiation at surface (DSR) and the reflected SW radiation at top of atmosphere (RSR), are routinely generated from the Advanced Baseline Imager (ABI) onboard the GOES-R series of US satellites. Both products require a SW broadband top-of-atmosphere (TOA) albedo converted from ABI narrowband reflectances. The narrow-to-broadband (NTB) conversion is currently derived from simulated broadband and narrowband reflectances, which have limitations in capturing the full range of variabilities present in satellite observations. We are experimenting with deriving empirical NTB from pairs of ABI and Clouds and Earth's Radiant Energy System (CERES) observations. ABI SW radiation products estimated with the empirical spectral conversion are generated and their evaluation with reference data is presented in this paper. The use of ABI SW products in the verification of model prediction is also presented using forecast DSR values in the Global Forecast System from NOAA/NCEP.