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 Raymond David 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