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A new global ice sheet reconstruction for the past 80 000 years

Author

Listed:
  • Evan J. Gowan

    (Helmholtz Center for Polar and Marine Research
    University of Bremen)

  • Xu Zhang

    (Lanzhou University
    Chinese Academy of Sciences (CAS))

  • Sara Khosravi

    (Helmholtz Center for Polar and Marine Research)

  • Alessio Rovere

    (University of Bremen)

  • Paolo Stocchi

    (NIOZ)

  • Anna L. C. Hughes

    (University of Manchester
    University of Bergen and Bjerknes Centre for Climate Research)

  • Richard Gyllencreutz

    (Stockholm University)

  • Jan Mangerud

    (University of Bergen and Bjerknes Centre for Climate Research)

  • John-Inge Svendsen

    (University of Bergen and Bjerknes Centre for Climate Research)

  • Gerrit Lohmann

    (Helmholtz Center for Polar and Marine Research
    University of Bremen)

Abstract

The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field sea level indicators and modelled sea level from ice sheet reconstructions. In the absence of ice sheet reconstructions, researchers often use marine δ18O proxy records to infer ice volume prior to the LGM. We present a global ice sheet reconstruction for the past 80 000 years, called PaleoMIST 1.0, constructed independently of far-field sea level and δ18O proxy records. Our reconstruction is compatible with LGM far-field sea-level records without requiring extra ice volume, thus solving the missing ice problem. However, for Marine Isotope Stage 3 (57 000-29 000 years before present) - a pre-LGM period - our reconstruction does not match proxy-based sea level reconstructions, indicating the relationship between marine δ18O and sea level may be more complex than assumed.

Suggested Citation

  • Evan J. Gowan & Xu Zhang & Sara Khosravi & Alessio Rovere & Paolo Stocchi & Anna L. C. Hughes & Richard Gyllencreutz & Jan Mangerud & John-Inge Svendsen & Gerrit Lohmann, 2021. "A new global ice sheet reconstruction for the past 80 000 years," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21469-w
    DOI: 10.1038/s41467-021-21469-w
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    Cited by:

    1. Kevin Nota & Jonatan Klaminder & Pascal Milesi & Richard Bindler & Alessandro Nobile & Tamara Steijn & Stefan Bertilsson & Brita Svensson & Shun K. Hirota & Ayumi Matsuo & Urban Gunnarsson & Heikki Se, 2022. "Norway spruce postglacial recolonization of Fennoscandia," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Yusuke Yokoyama & Kurt Lambeck & Patrick Deckker & Tezer M. Esat & Jody M. Webster & Masao Nakada, 2022. "Towards solving the missing ice problem and the importance of rigorous model data comparisons," Nature Communications, Nature, vol. 13(1), pages 1-4, December.
    3. Evan J. Gowan & Xu Zhang & Sara Khosravi & Alessio Rovere & Paolo Stocchi & Anna L. C. Hughes & Richard Gyllencreutz & Jan Mangerud & John-Inge Svendsen & Gerrit Lohmann, 2022. "Reply to: Towards solving the missing ice problem and the importance of rigorous model data comparisons," Nature Communications, Nature, vol. 13(1), pages 1-5, December.
    4. F. Held & H. Cheng & R. L. Edwards & O. Tüysüz & K. Koç & D. Fleitmann, 2024. "Dansgaard-Oeschger cycles of the penultimate and last glacial period recorded in stalagmites from Türkiye," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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