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An ice-free Arctic Ocean in 2050 won't mean ice free
Original: An ice-free Arctic Ocean in 2050 doesn’t actually mean ice free
Reports on Arctic climate projections note that forecasts of an 'ice-free' Arctic Ocean by 2050 do not mean the ocean will be entirely free of ice. Scientists use the term to describe a threshold, typically when sea ice extent falls below one million square kilometres, so some ice will still remain. The clarification matters for how the public understands Arctic melting timelines.
Why now: New projections about Arctic sea ice disappearing by 2050 are prompting debate over what 'ice-free' actually means
Evidence
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