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Technical Thematic Report No. 5. - Canadian climate trends, 1950-2007

List of Figures

Figure 1. Change in mean annual temperature, 1950-2007

Figure 2. Change in mean temperature, 1950-2007 for a) spring (March, April, May), b) summer (June, July, August), c) fall (September, October, November), and d) winter (December, January, February)

Figure 3. Change in the amount of annual precipitation, 1950-2007.

Figure 4. Change in the amount of precipitation, 1950-2007 for, a) spring (March-May), b) summer (June-August), c) fall (September-November), and d) winter (December-February)

Figure 5. Change in the number of days with precipitation, 1950-2007

Figure 6. Change in the number of days with precipitation from 1950-2007 for a) spring (March-May), b) summer (June-August), c) fall (September-November) and d) winter (December-February)

Figure 7. Change in the Palmer Drought Severity Index (PDSI) for summer (June- August), 1950-2007

Figure 8. Change in the number of days with ³ 2 cm of snow on the ground, 1950-2007, in a) the first half of the snow season (August to January) which indicates changes in the start date of snow cover, and b) in the second half of the snow season (February to July) which indicates changes in the end date of snow cover

Figure 9. Change in the maximum annual snow depth, 1950-2007

Figure 10. Absolute change in the ratio of snow to total precipitation in Canada, 1950-2007

Figure 11. Trends in lake ice thaw date across Canada, 1950-2005

Figure 12. Change in the length of growing season, 1950-2007

Figure 13. Change in the start date of the growing season in Canada, 1950-2007

Figure 14. Change in the effective growing degree days (a measure of accumulated heat during the growing season), 1950-2007

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