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Holloway MD, Sime LC, Singarayer JS, et al. Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse. Nat Commun. 2016;7:12293doi: 10.1038/ncomms12293.
Holloway, M. D., Sime, L. C., Singarayer, J. S., Tindall, J. C., Bunch, P., & Valdes, P. J. (2016). Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse. Nature communications, 712293. https://doi.org/10.1038/ncomms12293
Holloway, Max D, et al. "Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse." Nature communications vol. 7 (2016): 12293. doi: https://doi.org/10.1038/ncomms12293
Holloway MD, Sime LC, Singarayer JS, Tindall JC, Bunch P, Valdes PJ. Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse. Nat Commun. 2016 Aug 16;7:12293. doi: 10.1038/ncomms12293. PMID: 27526639; PMCID: PMC4990695.
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Nat Commun. 2016 Aug 16;7:12293. doi: 10.1038/ncomms12293.

Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse.

Nature communications

Max D Holloway, Louise C Sime, Joy S Singarayer, Julia C Tindall, Pete Bunch, Paul J Valdes

Affiliations

  1. Ice Dynamics and Paleoclimate, British Antarctic Survey, Cambridge CB3 0ET, UK.
  2. School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK.
  3. Department of Meteorology, University of Reading, Reading RG6 6BB, UK.
  4. School of Earth and Environment, University of Leeds, Leeds LS2 9JT, UK.
  5. Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK.

PMID: 27526639 PMCID: PMC4990695 DOI: 10.1038/ncomms12293

Abstract

Several studies have suggested that sea-level rise during the last interglacial implies retreat of the West Antarctic Ice Sheet (WAIS). The prevalent hypothesis is that the retreat coincided with the peak Antarctic temperature and stable water isotope values from 128,000 years ago (128 ka); very early in the last interglacial. Here, by analysing climate model simulations of last interglacial WAIS loss featuring water isotopes, we show instead that the isotopic response to WAIS loss is in opposition to the isotopic evidence at 128 ka. Instead, a reduction in winter sea ice area of 65±7% fully explains the 128 ka ice core evidence. Our finding of a marked retreat of the sea ice at 128 ka demonstrates the sensitivity of Antarctic sea ice extent to climate warming.

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