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Tracking the amount of sea ice from the Greenland ice sheet

The Greenland ice sheet records information about Arctic temperature and climate going back to more than 120 000 years ago. But new research from the Niels Bohr Institute among others reveals that the ice doesn't just tell us about the situation in the air and on the land – it can also tell us about what was happening at sea. By analysing ice cores drilled from deep inside the Greenland ice sheet, researchers have started to calculate how much Arctic sea ice there was in the past.
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