Increasing frequency and duration of Arctic winter warming events

Robert M. Graham1, Lana Cohen1, Alek Petty2, Linette Boisvert3, Annette Rinke4, Stephen R Hudson1, Marcel Nicolaus5 and Mats A Granskoog1, (1)Norwegian Polar Institute, Tromsø, Norway, (2)Earth System Science Interdisciplinary Center, College Park, MD, United States, (3)Earth System Science Interdisciplinary Center, COLLEGE PARK, MD, United States, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, (5)Alfred Wegener Institute, Bremerhaven, Germany