Vasiliy Andreevich Tolmanov¹ and Valery I Grebenets^1,2, (1)Lomonosov Moscow State University, Faculty of Geography, Cryolithology and Glaciology Department, Moscow, Russia, (2)Lomonosov Moscow State University, Moscow, Russia

Vera Kuklina¹, Andrey N Petrov², Victor Bogdanov³, Irina Bilichenko³, Dmitry Kobylkin³ and Natalia Krasnoshtanova³, (1)George Washington University, Washington, DC, United States, (2)University of Northern Iowa, Department of Geography, Cedar Falls, IA, United States, (3)V.B. Sochava Institute of Geography, Siberian Branch of Russian Academy of Sciences, Irkutsk, Russia

Ambroise Dufour¹, Olga G. Zolina², Sergey Gulev³, Martin Wegmann⁴ and Pavel Shabanov¹, (1)Shirshov Institute of Oceanology, Moscow, Russia, (2)Laboratoire de glaciologie et géophysique de l'environnement, Grenoble, France, (3)P.P.Shirshov Institute of Oceanology, RAS,, Sea Atmosphere Interaction And Climate Lab, Moscow, Russia, (4)University of Grenoble, Laboratoire de Glaciologie et Géophysique de l’Environnement, Grenoble, France

Evgeny P Gordov, Institute of Monitoring of Climatic and Ecological Systems SB RAS, Tomsk, Russia, Yulia E Gordova, SCERT, IMCES SB RAS, Tomsk, Russia, Pavel Groisman, P.P.Shirshov Institute of Oceanology, RAS, Moscow, Russia; National Centers for Environment Information Center for Weather and Climate, Asheville, NC, United States and Anna A Ryazanova, Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

Marina Ivanovna Dinu, Vernadsky Institute of Geochemistry and Analytical Chemistry RAS, Biogeochemistry, Moscow, Russia and Tatyana Moiseenko, Vernadsky Institute of Geochemistry and Analytical Chemistry RAS, Biogeochemistry, Moscow, Moscow, Russia

Geoffrey M Henebry^1,2, Ginger RH Allington³, Jiquan Chen^1,2, Kirsten de Beurs⁴, Peilei Fan^2,5, Pavel Groisman^6,7, Elizabeth A Mack^1,2, Herman Henry Shugart⁸, Amber Jeanine Soja⁹ and Monika Anna Tomaszewska², (1)Michigan State University, Department of Geography, Environment, and Spatial Sciences, East Lansing, MI, United States, (2)Michigan State University, Center for Global Change and Earth Observations, East Lansing, MI, United States, (3)George Washington University, Department of Geography, Washington, DC, United States, (4)University of Oklahoma, Geography and Environmental Sustainability, Norman, OK, United States, (5)Michigan State University, School of Planning, Design, and Construction, East Lansing, MI, United States, (6)Hydrology Science and Services Corp, Asheville, United States, (7)P.P.Shirshov Institute of Oceanology, RAS, Moscow, Russia, (8)University of Virginia, Department of Environmental Sciences, Charlottesville, VA, United States, (9)National Institute of Aerospace, Hampton, VA, United States

Birgit Heim¹, Iuliia Shevtsova², Alexandra Runge³, Stefan Kruse³, Ingmar Nitze⁴, Guido Grosse⁵, Ulrike Herzschuh¹, Agata Buchwal⁶, Grzegorz Rachlewicz⁷ and Annett Bartsch⁸, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Polar Terrestrial Environmental Systems, Potsdam, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Potsdam, Germany, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Permafrost Research, Potsdam, Germany, (5)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Permafrost Research Section, Potsdam, Germany, (6)Adam Mickiewicz University, Institute of Geoecology and Geoinformation, Poznan, Poland, (7)Adam Mickiewicz University, Cryosphere Research Department, Poznań, Poland, (8)B.Geos, Korneuburg, Austria

Alexander I Shiklomanov¹, Richard B Lammers¹, Alexander A Proussevitch¹, Mikhail Tretiakov² and Irina P Panyushkina³, (1)University of New Hampshire, Earth Systems Research Center, Durham, NH, United States, (2)Arctic and Antarctic Research Institute, St.Petersburg, Russia, (3)University of Arizona, Tucson, AZ, United States

Bruce C. Forbes, University of Lapland, Arctic Centre, Rovaniemi, Finland, Mariana Verdonen, University of Eastern Finland, Joensuu, Finland, Logan T. Berner, Northern Arizona University, SICCS, Flagstaff, AZ, United States and Timo Kumpula, University of Eastern Finland, Department of Geographical and Historical Studies, Joensuu, Finland