Proximal measurements of microwave reflectance using GNSS-IR track semi-arid grassland vegetation dynamics during greening and browning phases - Charles J. Devine; Russell L. Scott; Joel A. Biederman; Jinyang Du; David J.P. Moore; Andrew F. Feldman; Jessicca S. Guo; David K. Adams; William K. Smith (Agricultural and Forest Meteorology, 2026)