Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 9
Articles | Volume 22, issue 9
https://doi.org/10.5194/cp-22-1757-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/cp-22-1757-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 9
Research article
 | 
28 Sep 2026
Research article |  | 28 Sep 2026

Holocene-like summer climate during Marine Isotope Stage 11 in northwestern Greenland

John Michael N. Aguilar, Elizabeth K. Thomas, Diana S. Aga, Paul R. Bierman, Jason P. Briner, Isla S. Castañeda, and Andrew J. Christ

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Short summary
As the Arctic warms, the Greenland Ice Sheet is losing mass, with implications for global sea levels. We analyzed biomarkers from sediments beneath 1387 m of ice at Camp Century, Greenland, deposited when the ice sheet was smaller. Reconstructed summer temperature and precipitation isotopes from ~ 400 000 years ago show summers ~ 4.7 °C warmer than today, with more local moisture from reduced ice. This result highlights that both how warm and how long warming lasts matter to reduce ice loss.
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The Camp Century ice and sediment core: new science from a...