Figure 4.  Sea ice coverage at 8 June 2015 (centre) to the same date in 2009 (an late breakup year, July 2, top) and 2011 (an early breakup year, June 5, below). Compare amount of ice in each of the three coloured areas. Note that in 2015 there is less open water in Hudson Strait (magenta) and eastern Hudson Bay (yellow) than there was in 2009 – despite the larger area of open water in NW Hudson Bay this year. Click to enlarge.
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