1. Department of Geography, McGill University, Room 705 Burnside Hall Building, 805 Sherbrooke Street West, Montreal, Quebec, H3A 0B9, Canada
2. McGill School of Environment, McGill University, 3534 University Street, Montreal, Quebec, H3A 2A7, Canada
3. School of Education, Iowa State University, 1620 Lagomarcino Hall, Ames, Iowa 50011, USA
4. Center for Climate Systems Research, Columbia University, National Aeronautics and Space Administration Goddard Institute for Space Studies (GISS), 2880 Broadway, New York, New York 10025, USA