Net effect of ice-sheet–atmosphere interactions reduces simulated transient Miocene Antarctic ice-sheet variability

Stap, Lennert B.; Berends, Constantijn J.; Scherrenberg, Meike D. W.; van de Wal, Roderik S. W.; Gasson, Edward G. W.

doi:https://doi.org/10.5194/tc-16-1315-2022

Articles | Volume 16, issue 4

The Cryosphere, 16, 1315–1332, 2022

https://doi.org/10.5194/tc-16-1315-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

The Cryosphere, 16, 1315–1332, 2022

https://doi.org/10.5194/tc-16-1315-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 4

Research article

11 Apr 2022

Research article | 11 Apr 2022

Net effect of ice-sheet–atmosphere interactions reduces simulated transient Miocene Antarctic ice-sheet variability

Lennert B. Stap et al.

Supplement

https://doi.org/10.5194/tc-16-1315-2022-supplement

Data sets

Idealised steady-state and transient simulations of Miocene Antarctic ice-sheet variability using 3D thermodynamical ice-sheet model IMAU-ICE L. B. Stap, C. J. Berends, M. D. W. Scherrenberg, R. S. W. Van de Wal and E. G. W. Gasson https://doi.org/10.1594/PANGAEA.939114

Model code and software

IMAU-ICE v1.1.1-MIO C. J. Berends and L. B. Stap https://doi.org/10.5281/zenodo.6352125

Short summary

To gain understanding of how the Antarctic ice sheet responded to CO₂ changes during past warm climate conditions, we simulate its variability during the Miocene. We include feedbacks between the ice sheet and atmosphere in our model and force the model using time-varying climate conditions. We find that these feedbacks reduce the amplitude of ice volume variations. Erosion-induced changes in the bedrock below the ice sheet that manifested during the Miocene also have a damping effect.