Arctic Sea Ice Loss Prompts Biggest Change to Maps ‘Since Breakup of USSR’

National Geographic cartographer: 'Until you have a hard-copy map in your hand, the message doesn't really hit home.'
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    An iceberg captured on camera during a 30-day mission in 2012 to map areas of the Arctic aboard the NOAA Ship Fairweather. (Original source: National Ocean Service Image Gallery)

    Cartographers working on the latest edition of the National Geographic Atlas of the World say that Arctic sea ice loss is the greatest visible change compared with previous editions of the map outside of the “breakup of the U.S.S.R.”

    According to National Geographic, in the 10th edition of the Atlas, which will be released on September 30, the depiction of multiyear ice—or ice that has survived for at least two summers—is now a significantly smaller area than on previous maps.

    “You hear reports all the time in the media about this,” said National Geographic Geographer Juan José Valdés. “Until you have a hard-copy map in your hand, the message doesn’t really hit home.”

    The dramatic loss of Arctic sea ice is one of the primary indicators of the effects of human caused global warming. Recent data from the National Snow and Ice Data Center showed that in March, when sea ice reached its maximum extent for the year, the amount of ice cover fell to its fifth lowest on record.

    The latest Arctic map draws from data collected over a 30-year sea ice study conducted by NASA.

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