The Cryosphere
The Cryosphere
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Articles | Volume 13, issue 7
Articles | Volume 13, issue 7
https://doi.org/10.5194/tc-13-2023-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/tc-13-2023-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 7
Research article
 | 
19 Jul 2019
Research article |  | 19 Jul 2019

Modelling the Antarctic Ice Sheet across the mid-Pleistocene transition – implications for Oldest Ice

Johannes Sutter, Hubertus Fischer, Klaus Grosfeld, Nanna B. Karlsson, Thomas Kleiner, Brice Van Liefferinge, and Olaf Eisen

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Short summary
The Antarctic Ice Sheet may have played an important role in moderating the transition between warm and cold climate epochs over the last million years. We find that the Antarctic Ice Sheet grew considerably about 0.9 Myr ago, a time when ice-age–warm-age cycles changed from a 40 000 to a 100 000 year periodicity. Our findings also suggest that ice as old as 1.5 Myr still exists at the bottom of the East Antarctic Ice Sheet despite the major climate reorganisations in the past.
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Oldest Ice: finding and interpreting climate proxies in ice...