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Great Lakes total ice cover approaches 85%, well above the long-term averageand closing in on 2014's mark of 92.5%. In this image Lake Erie is a vast white plain, joining Lake Huron and Lake Superior with coverages above 90% and onlysmall areas of open water. Image taken by Suomi NPP satellite's VIIRSinstrument. (Image credit: NOAA/NASA/NESDIS Environmental Visualization Laboratory)