In its latest entry on "health repercussions for Canadians of a changing climate" in the Globe and Mail newspaper, Karen McColl raises the alarm bells on "substantial increases in occurrences of extremely hot seasons" in Canada. Apparently, "Clean Air Partnership [CAP], a non-profit that addresses climate-change issues, says maximum temperatures in Toronto are expected to rise 7 C over the next 30 to 40 years." That is a remarkable claim. A predicted 7 degrees Celsius increase in maximum temperatures over a 30-year period in Toronto equates to a rate of 23.3 degrees Celsius per century. To say that is insanely large would be an understatement. So how does the historical trend in maximum temperatures for Toronto compare with this hysterical claim? The results are not promising for the Globe and Mail. Using the benchmark Environment Canada Adjusted and Homogenized Canadian Climate Data (AHCCD) database, the mean of daily maximum temperatures during...(Read Full Post)