Reducing Wet Ammonium Deposition in Rocky Mountain National Park: the Development and Evaluation of A Pilot Early Warning System for Agricultural Operations in Eastern Colorado - Aaron J. Piña; Russ S. Schumacher; A. Scott Denning; William B. Faulkner; Jill S. Baron; Jay Ham; Dennis S. Ojima; Jeffrey L. Collett (Environmental Management, 2019)