1. Environmental Science Department, Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom, Meteorological Services of Canada, 4905 Dufferin Street, Downsview, Ontario, Canada M3H 5T4, Air Zone, 2240 Speakman Drive, Mississauga, Ontario, Canada L5K 1A9, and Department of Fisheries and Oceans, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, Canada R3T 2N6