Antarctic Ice Sheet variability across the Eocene-Oligocene boundary climate transition
Galeotti, S.; DeConto, R.; Naish, T.; Stocchi, P.; Florindo, F.; Pagani, M.; Barrett, P.; Bohaty, S.M.; Lanci, L.; Pollard, D.; Sandroni, S.; Talarico, F.M.; Zachos, J.C. (2016). Antarctic Ice Sheet variability across the Eocene-Oligocene boundary climate transition. Science (Wash.) 352(6281): 76-80. http://dx.doi.org/10.1126/science.aab0669
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, more
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| Keywords |
Ice sheets
Temporal variations > Long-term changes > Sea level changes
Marine/Coastal |
| Authors | | Top |
- Galeotti, S.
- DeConto, R.
- Naish, T.
- Stocchi, P., more
- Florindo, F.
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- Pagani, M.
- Barrett, P.
- Bohaty, S.M.
- Lanci, L.
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- Pollard, D.
- Sandroni, S.
- Talarico, F.M.
- Zachos, J.C.
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| Abstract |
Why did the Antarctic Ice Sheet begin to grow 34 million years ago, and what does that have to do with us? Galeotti et al. studied a marine sediment core recovered from just off the coast of Antarctica (see the Perspective by Lear and Lunt). The ice sheet did not begin to grow until atmospheric CO2 concentrations had dropped to below around 600 parts per million. Indeed, the ice sheet was unstable when CO2 was higher. As modern atmospheric CO2 concentrations continue their rise, a shift back to an unstable Antarctic Ice Sheet could increase harmful rises in sea level. |
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