The Contribution of On-Road Emissions of Ammonia to Atmospheric Nitrogen Deposition

Mark E. Fenn1, Susan Schilling2, Andrzej Bytnerowicz3, Michael D Bell4, James O Sickman5, Ken Hanks2 and Linda Geiser6, (1)USDA Jonesboro, Jonesboro, AR, United States, (2)USDA Forest Service, Pacific Southwest Research Station, Riverside, CA, United States, (3)US Forest Service Riverside, Riverside, CA, United States, (4)National Park Service, Air Resources Division, Lakewood, CO, United States, (5)University of California, Riverside, Department of Environmental Sciences, Riverside, CA, United States, (6)USDA Forest Service, National Headquarters-Biological and Physical Resources, Washington, United States