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|a The reversibility of sea ice loss in a state-of-the-art climate model |h [electronic resource]. |
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|a [S.l.] : |b American Geophysical Union, |c 2011. |
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|a Geophysical Research Letters Volume 38. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Rapid Arctic sea ice retreat has fueled speculation
about the possibility of threshold (or ‘tipping point’)
behavior and irreversible loss of the sea ice cover. We test
sea ice reversibility within a state‐of‐the‐art atmosphere–
ocean global climate model by increasing atmospheric
carbon dioxide until the Arctic Ocean becomes ice‐free
throughout the year and subsequently decreasing it until
the initial ice cover returns. Evidence for irreversibility in
the form of hysteresis outside the envelope of natural
variability is explored for the loss of summer and winter
ice in both hemispheres. We find no evidence of
irreversibility or multiple ice‐cover states over the full
range of simulated sea ice conditions between the modern
climate and that with an annually ice‐free Arctic Ocean.
Summer sea ice area recovers as hemispheric temperature
cools along a trajectory that is indistinguishable from the
trajectory of summer sea ice loss, while the recovery of
winter ice area appears to be slowed due to the long
response times of the ocean near the modern winter ice
edge. The results are discussed in the context of previous
studies that assess the plausibility of sea ice tipping points
by other methods. The findings serve as evidence against
the existence of threshold behavior in the summer or
winter ice cover in either hemisphere. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a E. Blanchard-Wrigglesworth. |
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|t The reversibility of sea ice loss in a state-of-the-art climate model |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15042634/00001 |y Click here for full text |
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|3 FULL TEXT- The reversibility of sea ice loss in a state-of-the-art climate model |u http://onlinelibrary.wiley.com/doi/10.1029/2011GL048739/abstract |y The reversibility of sea ice loss in a state-of-the-art climate model |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/04/26/34/00001/FI15042634_thm.jpg |
