1. Centre for Atmospheric Research Experiments, Environment Canada, 6248 Eighth Line, Egbert, ON, L0L 1N0, Canada, Department of Chemistry, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C 1A4, Canada, Freshwater Institute, Department of Fisheries and Oceans, University of Manitoba, 501 University Crescent, Winnipeg, MB, R3T 2N6, Canada, Centre for Earth Observation Science, University of Manitoba, 474 Wallace Building, 125 Dysard Road, Winnipeg, MB, R3T 2N2, Canada, and Science and...