Lukas Bigler, Stockholm University, Environmental Science, Stockholm, Sweden, Flor Vermassen, Stockholm University, Department of Geological Sciences, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm, Sweden, Julek Chawarski, ASL Environmental Sciences, Victoria, BC, Canada; Stockholm University, Bolin Center for Climate Research, Stockholm, Sweden, Claudia Frey, University of Basel, Basel, Switzerland and Julie Lattaud, Stockholm University, Department of Environmental Sciences, Stockholm, Sweden