The pattern of temperature change over Canada and elsewhere is complex. Changes in atmospheric circulation, and hence wind directions, during the past 50 years have caused some regions to warm much more than the hemispheric average of 0.3° C, and others to cool significantly These regional changes may be at least partly related to a long term natural cycle called the Arctic Oscillation. Future decades could see a reversal of the pattern, with greater rate of warming in the eastern Arctic than in the west Source: Graph prepared by Climate Research Branch (MSC) staff using University of East Anglia data.
• source: Climate Change: The role of engineers and geoscientists • See also XlnkS5D6