Paola Moffa-Sanchez, Durham University, Department of Geography, Durham, United Kingdom, Liisa Ilvonen, University of Oulu, Research Unit of Mathematical Sciences,, Oulu, Finland, Margit H Simon, NORCE, Norwegian Research Centre; Bjerknes Centre for Climate Research, Bergen, Norway, Yair Rosenthal, Rutgers University, New Brunswick, United States, David J Thornalley, University College London, Dept. of Geography, London, United Kingdom, Shirin Ermis, Oxford University, Department of Physics, Oxford, United Kingdom, Lasse Holmstrom, University of Oulu, Research Unit of Mathematical Sciences, Oulu, Finland and Ian R Hall, Cardiff University, School of Earth and Environmental Sciences, Cardiff, CF24, United Kingdom