FlexBRDF: A Flexible BRDF Correction for Grouped Processing of Airborne Imaging Spectroscopy Flightlines. - Queally, Natalie; Ye, Zhiwei; Zheng, Ting; Chlus, Adam; Schneider, Fabian; Pavlick, Ryan P.; Townsend, Philip A. (Journal of Geophysical Research. Biogeosciences, 2022)