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Arctic winter sea ice is being overestimated by climate models

Earth.com · By Luis Arrais ·

Arctic winter sea ice is being overestimated by climate models

The Brief

  • Climate models disagree most about Arctic winter sea ice, according to the source.
  • Together, the models simulate nearly a million square kilometers too much March sea ice, about 386,000 square miles.
  • The source describes the overestimate as close in size to Texas.

Why it matters

Arctic sea ice loss is usually reported as a summer story, but this suggests winter ice, which is what the models get most wrong, deserves more scrutiny in climate projections.

Who’s affected

  • climate modelers
  • Arctic climate researchers

Arctic sea ice loss usually gets told as a summer story, counting down to the first ice-free summer. Yet climate models disagree most about winter ice. Together, they simulate nearly a million square kilometers too much March ice – about 386,000 square miles, close to Texas and…

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