David has been employed with Environment Canada’s weather service for over 40 years. His work activities relate to the study of the climate of Canada and to promote awareness and understanding of weather and climate in Canada. He has published several books, papers and reports on the climate of Canada, including a book on The Climates of Canada, and two bestsellers: The Day Niagara Falls Ran Dry and Blame It On The Weather.
He is the originator and author of the Canadian Weather Trivia Calendar, the most popular calendar sold in Canada, and now in its 27th year. For nearly ten years he wrote the Weather-wise column in the Canadian Geographic magazine. David frequently appears on national radio and television as a commentator on weather and climate matters.
David is a fellow of both the Royal Canadian Geographical Society and the Canadian Meteorological and Oceanographic Society. He has been awarded the Patterson Medal for Distinguished Service to Meteorology in Canada and has twice received the Public Service Merit Award. David is the recipient of two honorary doctorates from the University of Waterloo and Nipissing University. In 2001, David was named to the Order of Canada.