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Holocene Southern Ocean surface temperature variability west of the Antarctic Peninsula

Author

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  • A. E. Shevenell

    (School of Oceanography, University of Washington
    Present address: Departments of Geography and Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK.)

  • A. E. Ingalls

    (School of Oceanography, University of Washington)

  • E. W. Domack

    (Hamilton College)

  • C. Kelly

    (School of Oceanography, University of Washington)

Abstract

Shifting influences on Antarctic climate The Antarctic Peninsula is currently one of the fastest-warming locations on Earth, but its long-term variability has remained unclear. Amelia Shevenell and colleagues now use the TEX86 proxy, a palaeothermometer that tracks membrane lipids of the marine picoplankton Crenarchaeota, to show that a long-term cooling of about 4 °C occurred in waters near the tip of Antarctic Peninsula over the past 12,000 years. This is consistent with orbitally controlled changes in insolation. Shorter-term variability in temperature seems to have been strongly influenced by the position of the westerly winds. This work suggests that the present influence of the El-Nino Southern Oscillation system on the Antarctic Peninsula is a relatively recent phenomenon, dating to the late Holocene.

Suggested Citation

  • A. E. Shevenell & A. E. Ingalls & E. W. Domack & C. Kelly, 2011. "Holocene Southern Ocean surface temperature variability west of the Antarctic Peninsula," Nature, Nature, vol. 470(7333), pages 250-254, February.
    • Handle: RePEc:nat:nature:v:470:y:2011:i:7333:d:10.1038_nature09751
    DOI: 10.1038/nature09751
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    Cited by:

    1. Adam D. Sproson & Yusuke Yokoyama & Yosuke Miyairi & Takahiro Aze & Rebecca L. Totten, 2022. "Holocene melting of the West Antarctic Ice Sheet driven by tropical Pacific warming," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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