Heidi Rodenhizer¹, Justin Ledman², Marguerite Mauritz³, Susan Natali⁴, Elaine Pegoraro⁵, César Plaza⁶, Emily Leslie Romano¹, Christina Schaedel⁵, Megan Taylor⁷ and Edward Schuur⁸, (1)Northern Arizona University, Center for Ecosystem Science and Society (ECOSS), Flagstaff, AZ, United States, (2)University of Alaska Fairbanks, Fairbanks, AK, United States, (3)University of Texas at El Paso, El Paso, TX, United States, (4)Woods Hole Research Center, Falmouth, MA, United States, (5)Northern Arizona University, Flagstaff, AZ, United States, (6)Spanish National Research Council, Zaragoza, Spain, (7)Yale University, New Haven, United States, (8)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States

Edward Schuur¹, Rosvel G Bracho², Gerardo Celis³, Elizabeth Fay Belshe⁴, Christopher Ebert¹, Justin Ledman⁵, Marguerite Mauritz⁶, Elaine Pegoraro⁷, César Plaza⁸, Heidi Rodenhizer^1,9, Vladimir E Romanovsky⁵, Christina Schaedel⁷, Megan Taylor¹⁰, David W Schirokauer¹¹, Jason Vogel² and Elizabeth Webb¹², (1)Northern Arizona University, Center for Ecosystem Science and Society (ECOSS), Flagstaff, AZ, United States, (2)University of Florida, School of Forest Resources and Conservation, Gainesville, FL, United States, (3)University of Florida, Gainesville, FL, United States, (4)University of Florida, Gainesville, United States, (5)University of Alaska Fairbanks, Fairbanks, AK, United States, (6)University of Texas at El Paso, El Paso, TX, United States, (7)Northern Arizona University, Flagstaff, AZ, United States, (8)Spanish National Research Council, Zaragoza, Spain, (9)Organization Not Listed, Washington, DC, United States, (10)Yale University, New Haven, United States, (11)Denali National Park, Denali National Park, AK, United States, (12)University of Florida, Ft Walton Beach, FL, United States

Ruth K Varner, University of New Hampshire Main Campus, Durham, NH, United States, Patrick M Crill, Stockholm University, Stockholm, Sweden, Steve E Frolking, University of New Hampshire, Institute for the Study of Earth, Oceans, and Space, Durham, NH, United States, Michael W Palace, University of New Hampshire, Dept. of Earth Sciences and Earth Systems Research Center, Durham, NH, United States, Carmody K McCalley, Rochester Institute of Technology, Rochester, NY, United States, Jeff Chanton, Florida State University, Tallahassee, FL, United States, Beth Holmes, Florida State University, Dept. of Earth, Ocean, & Atmospheric Science, Tallahassee, FL, United States, Scott R Saleska, University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, AZ, United States and Virginia Isabel Rich, University of Arizona, Tucson, AZ, United States

Noah Sonnenberg¹, Claudia I Czimczik², Jeffrey M Welker³, Ulrike Seibt¹ and Kadmiel Maseyk⁴, (1)University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (2)Univ of California, Irvine, Irvine, CA, United States, (3)University of Alaska Anchorage, Department of Biological Sciences, Anchorage, AK, United States, (4)Pierre and Marie Curie University - Paris 6, Biogeochemistry and Ecology of Continental Environments, Thiverval-Grignon, France

Min Jung Kwon¹, Philippe Ciais², Chunjing Qiu³, Elodie Salmon⁴, Bertrand Guenet¹, Mathias Goeckede⁵, Eugenie Susanne Euskirchen⁶, Hannu Nykänen⁷, Edward Schuur⁸, Merritt R Turetsky⁹, Catherine M Dieleman¹⁰, Donatella Zona¹¹ and Ashley Ballantyne¹², (1)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (2)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette, France, (3)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette, France, (4)CNRS-Orleans, Orleans, France, (5)MPI Biogeochemistry, Jena, Germany, (6)University of Alaska Fairbanks, Fairbanks, AK, United States, (7)University of Eastern Finland, Kuopio, Finland, (8)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States, (9)University of Guelph, Guelph, ON, Canada, (10)University of Guelph, Department of Integrative Biology, Guelph, ON, Canada, (11)University of Sheffield, Sheffield, United Kingdom, (12)University of Montana, Missoula, MT, United States

Anne Bjorkman, University of Gothenburg, Gothenburg, Sweden and the International Tundra Experiment network

Yuanhe Yang¹, Dan Kou¹, Guibiao Yang¹, Fei Li², Xuehui Feng², Dianye Zhang², Chao Mao¹, Qiwen Zhang¹, Yunfeng Peng¹, Chengjun Ji³, Qiuan Zhu⁴, Yunting Fang⁵, Xueyan Liu⁶, Xu Ri⁷, Siqi Li⁸, Jia Deng⁹, Xunhua Zheng¹⁰ and Jingyun Fang², (1)IB Institute of Botany, Chinese Academy of Sciences, Beijing, China, (2)Institute of Botany, Chinese Academy of Sciences, Beijing, China, (3)Peking University, Beijing, China, (4)Northwest A&F University, Yangling, China, (5)Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China, (6)Boulder, CO, United States, (7)Key Laboratory of Alpine Ecology and Biodiversity Institute of Tibetan Plateau Research Chinese Academy of Sciences and CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China, (8)Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China, (9)University of New Hampshire, Beijing, United States, (10)State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

Sayedeh Sara Sayedi¹, Benjamin W Abbott¹, Brett Thornton², Jennifer Mary Frederick³, Jorien Vonk⁴, Paul Overduin⁵, Christina Schaedel⁶, Edward Schuur⁷, Annie Bourbonnais⁸, Nikita Demidov⁹, Anatoly Gavrilov¹⁰, Shengping He¹¹, Gustaf Hugelius¹², Martin Jakobsson¹³, Miriam Jones¹⁴, DongJoo Joung¹⁵, Gleb Kraev¹⁶, Robie W Macdonald¹⁷, Anthony David McGuire¹⁸, Mu Cuicui¹⁹, Matt O'Regan¹³, Kathryn M Schreiner²⁰, Christian Stranne¹³, Elena Pizhankova²¹, Alexander Vasiliev²², Sebastian Westermann²³, Jay P Zarnetske²⁴, Tingjun Zhang²⁵, Mehran Ghandehari²⁶, Sarah Baeumler²⁷, Brian Brown¹ and Rebecca Josephine Frei²⁸, (1)Brigham Young University, Provo, UT, United States, (2)Stockholm University, Stockholm, Sweden, (3)Sandia National Laboratories, Albuquerque, NM, United States, (4)Vrije Universiteit Amsterdam, Amsterdam, Netherlands, (5)Alfred Wegener Institute Hemlholtz Centre for Polar and Marine Research, Potsdam, Potsdam, Germany, (6)Northern Arizona University, Flagstaff, AZ, United States, (7)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States, (8)University of South Carolina, School of the Earth, Ocean & Environment, Columbia, SC, United States, (9)Arctic and Antarctic Research Institute, St. Petersburg, Russia, St. Petersburg, Russia, (10)Lomonosov Moscow State University, faculty of geology, Moscow, Russia, Moscow,, Russia, (11)University of Bergen, Department of Geoscience, The Faculty of Mathematics and Natural Sxiences, Norway, Bergen, Norway, (12)Stockholm University, Department of Physical Geography, Stockholm, Sweden, (13)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (14)U.S. Geological Survey., Reston, VA, United States, (15)University of Rochester, Dept of Earth & Environmental Sciences, Rochester, NY, Rochester, United States, (16)Russian Academy of Sciences, Institute of Physicochemical and Biological Problems of Soil Science, Moscow, Russia, Soil Cryology, Pushchino, Russia, (17)Inst Ocean Sciences, Sidney, BC, Canada, (18)Univ Alaska Fairbanks, Fairbanks, AK, United States, (19)Lanzhou University, College of Earth and Environmental Sciences, Gansu, China, Gansu, China, (20)University of Minnesota Duluth, Large Lakes Observatory, Duluth, MN, United States, (21)Lomonosov Moscow State University, faculty of geology, Moscow, Russia, Moscow, Russia, (22)Tyumen Scientific Center, Institute of Earth Cryosphere, Tyumen, Russia, (23)University of Oslo, Department of Geosciences, Oslo, Norway, (24)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, (25)National Snow and Ice Data Center - Cooperative Institute for Research in Environmental Sciences, University of Colorado, USA, Colorado, United States, (26)Medici Land Governance, Utah, USA, Utah, United States, (27)Ludwig Maximilians Universität, München, Germany, München, Germany, (28)University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada

Rachael Treharne, Woods Hole Research Center, Arctic Carbon Monitoring Program, Falmouth, MA, United States, Susan Natali, Woods Hole Research Center, Falmouth, MA, United States, Brendan M Rogers, University of California Irvine, Irvine, CA, United States, Thomas Gasser, IIASA International Institute for Applied Systems Analysis, Laxenburg, Austria, Erin MacDonald, University of Alberta, Edmonton, AB, Canada and Carly Phillips, Union of Concerned Scientists, Boston, United States

Yangxin Chen¹, Duoying Ji¹ and GeoMIP Model Groups, (1)Beijing Normal University, College of Global Change and Earth System Science, Beijing, China