Thirty years of the U.S. National Land Cover Database: Impacts and future direction - Sohl, Terry; Jin, Suming; Dewitz, Jon; Wickham, James; Brown, Jesslyn; Stehman, Stephen; Herold, Nathaniel; Schleeweis, Karen; Tollerud, Heather; Deering, Carol (Photogrammetric Engineering & Remote Sensing, 2025)