1. Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada, Department of Physical and Environmental Sciences, University of Toronto at Scarborough, 1265 Military Trail, Scarborough, Ontario M1C 1A4, Canada, Water Science and Technology Directorate, Environment Canada, Burlington, Ontario L7R 4A6, Canada, Department of Environmental Sciences, Lancaster University, Lancaster, United Kingdom, and Environment Division, World Meteorological Organization, Geneva,...