Articles | Volume 18, issue 9
https://doi.org/10.5194/tc-18-4233-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-4233-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
19 Sep 2024
Research article |
| 19 Sep 2024
| 19 Sep 2024
Feedback mechanisms controlling Antarctic glacial-cycle dynamics simulated with a coupled ice sheet–solid Earth model
Potsdam Institute for Climate Impact Research (PIK), Member of the Leibniz Association, Potsdam, Germany
Meike Bagge
Helmholtz Centre Potsdam – GFZ German Research Centre for Geosciences, Potsdam, Germany
now at: Federal Institute for Geosciences and Natural Resources, Hanover, Germany
Volker Klemann
Helmholtz Centre Potsdam – GFZ German Research Centre for Geosciences, Potsdam, Germany
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Short summary
We performed coupled ice sheet–solid Earth simulations and discovered a positive (forebulge) feedback mechanism for advancing grounding lines, supporting a larger West Antarctic Ice Sheet during the Last Glacial Maximum. During deglaciation we found that the stabilizing glacial isostatic adjustment feedback dominates grounding-line retreat in the Ross Sea, with a weak Earth structure. This may have consequences for present and future ice sheet stability and potential rates of sea-level rise.
We performed coupled ice sheet–solid Earth simulations and discovered a positive (forebulge)...
