Jeffrey M Welker¹, Eric S Klein², David Noone³, Hannah Bailey⁴, Pete Douglas Akers⁵, Ben G Kopec⁶, Hannu Marttila⁷, Kaisa-Riikka Mustonen⁴, Bjørn Kløve⁷, Hans Christian Steen-Larsen⁸ and Pan Arctic Water Isotopes, (1)University of Alaska Anchorage, University of Oulu & UArctic, Biological Sciences, Anchorage & Oulu, Finland, AK, United States, (2)University of Alaska Anchorage, Geological Sciences, Anchorage, AK, United States, (3)Oregon State University, College of Earth Ocean and Atmospheric Science, Corvallis, OR, United States, (4)University of Oulu, Ecology and Genetics Research Unit, Oulu, Finland, (5)University of Georgia, Athens, GA, United States, (6)Dartmouth College, Earth Sciences, Hanover, NH, United States, (7)University of Oulu, Water, Energy and Environmental Engineering Research Unit, Oulu, Finland, (8)University of Bergen, Bergen, Norway