Marguerite Mauritz¹, Gerardo Celis², Roisin Commane³, Eugenie Susanne Euskirchen⁴, Mathias Goeckede⁵, Elyn Humphreys⁶, Min Jung Kwon⁷, Christina Minions⁸, Susan Natali⁹, Steven F Oberbauer¹⁰, Frans-Jan W Parmentier¹¹, Brendan M Rogers¹², Mark Schildhauer¹³, Oliver Sonnentag¹⁴, Margaret S Torn¹⁵, Masahito Ueyama¹⁶, Anna-Maria Virkkala¹⁷, Jennifer Watts⁸ and Edward Schuur¹⁸, (1)University of Texas at El Paso, El Paso, TX, United States, (2)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, United States, (3)Columbia University of New York City, Palisades, CA, United States, (4)University of Alaska Fairbanks, Fairbanks, AK, United States, (5)MPI Biogeochemistry, Jena, Germany, (6)Carleton University, Ottawa, ON, Canada, (7)Korea Polar Research Institute, Incheon, South Korea, (8)Woods Hole Research Center, Falmouth, United States, (9)Woods Hole Science Center, Falmouth, MA, United States, (10)Florida Intl Univ, Miami, FL, United States, (11)University of Oslo, Department of Geosciences, Oslo, Norway, (12)Woods Hole Research Center, Falmouth, MA, United States, (13)National Center for Ecological Analysis and Synthesis, Santa Barbara, United States, (14)Université de Montréal, Département de Géographie, Montréal, QC, Canada, (15)Berkeley Lab/UC Berkeley, Berkeley, CA, United States, (16)Osaka Prefecture University, Sakai, Japan, (17)University of Helsinki, Helsinki, Finland, (18)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States