Analyzing drivers of variability in the Δ17O of nitrate in the northwestern United States

Sarah M Anderson1, Serena H Chung1, Jeffrey M Welker2, Benjamin Harlow1 and R Dave Evans3, (1)Washington State University, Pullman, WA, United States, (2)University of Alaska Anchorage, Anchorage, AK, United States, (3)Washington State University, School of Biological Sciences, Pullman, WA, United States