His major findings are:
- Winters are becoming shorter as measured from the time of first to last freeze.
- The number of days each year with low temperatures below -20C is decreasing.
- The number of days with temperatures above 30C is also decreasing, while the minimum daily summer temperatures are increasing.
Wakefield examines the graphs of days above 30C and days below -20C and sees indications of three phases of temperature behavior in the Belleville temperature record. Phase 1 is from 1933 to 1955, Phase 2 is from 1955 to 1982, and then Phase 3 is from then to 2006. He then plots the temperature against the sum of the days in a year above 30C plus the days below -20C plus the days in winter. The result is the graph below:
Whatever the explanation, the yellow Phase 1 was a time of weather extremes in Belleville. It was not a pleasant period. The green Phase 2 was an improvement in that the number of hot days above 30C had decreased and there was at least a slight drop in the number of days below -20C. The pink Phase 3 has clearly higher temperatures and is the catastrophe of our time! That catastrophe consists of shorter winters and a further decrease in the number of days below -20C! I am sure the people of Belleville, Ontario are boiling mad about the many evil people in the world producing CO2 and causing the weather to differ in these respects relative to what it was in the delightful Phase 1 period!
No. Whatever caused this change, I expect it is really very welcome in Belleville. They have a longer growing season and little need for air conditioning in the summer months. They also have fewer of those deadly -20C and below days. No rational person is not going to enjoy this. Indeed, most plants and animals are surely better off as well. Most of the detailed seasonal studies I have seen of warming around the Earth seem to show that the greatest warming in the Northern Hemisphere has been in the winter. Hardly anyone sees this as bad in their daily lives!