Does the Arctic sea ice have a tipping point

  title={Does the Arctic sea ice have a tipping point},
  author={Michael Winton},
  journal={Geophysical Research Letters},
  • M. Winton
  • Published 2006
  • Environmental Science
  • Geophysical Research Letters
[1] Two IPCC fourth assessment report climate models have Arctic Ocean simulations that become sea-ice-free year around in 1%/year CO2 increase to quadrupling experiments. These runs are examined for evidence of accelerated climate change associated with the removal of sea ice, particularly due to increasing surface albedo feedback. Both models become seasonally ice-free at an annual mean polar temperature of −9°C without registering much impact on the surface albedo feedback or disturbing the… Expand

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