1. Département de géographie & Centre d’études nordiques; Université de Montréal; 520 Chemin de la Côte Sainte-Catherine Montréal QC H2V 2B8 Canada
2. Department of Geography; University of Lethbridge; Lethbridge AB T1K 3M4 Canada
3. Department of Atmospheric and Oceanic Sciences; University of Wisconsin-Madison; Madison WI 53706 USA
4. Department of Geography; Swansea University; Singleton Park Swansea SA28PP UK
5. Cold Regions Research Centre; Wilfrid Laurier University; Waterloo ON N2L 3C5 Canada