Investigating the internal structure of the Antarctic ice sheet: the utility of isochrones for spatiotemporal ice-sheet model calibration

Sutter, Johannes; Fischer, Hubertus; Eisen, Olaf

doi:https://doi.org/10.5194/tc-15-3839-2021

Articles | Volume 15, issue 8

https://doi.org/10.5194/tc-15-3839-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Oldest Ice: finding and interpreting climate proxies in ice...

https://doi.org/10.5194/tc-15-3839-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 8

Research article

|

18 Aug 2021

Research article |

| 18 Aug 2021

Investigating the internal structure of the Antarctic ice sheet: the utility of isochrones for spatiotemporal ice-sheet model calibration

Johannes Sutter, Hubertus Fischer, and Olaf Eisen

Data sets

Radio-echo sounding isochrone depths in the East Antarctic Ice Sheet A. Winter, D. Steinhage, T. T. Creyts, and O. Eisen https://doi.org/10.1594/PANGAEA.895528

Model code and software

PISM The PISM authors https://pism-docs.org/wiki/doku.php

OceanParcels OceanParcels project https://oceanparcels.org/index.html

Video supplement

90 ka Antarctic tracers. Sutter, Johannes https://doi.pangaea.de/10.1594/PANGAEA.895528

Short summary

Projections of global sea-level changes in a warming world require ice-sheet models. We expand the calibration of these models by making use of the internal architecture of the Antarctic ice sheet, which is formed by its evolution over many millennia. We propose that using our novel approach to constrain ice sheet models, we will be able to both sharpen our understanding of past and future sea-level changes and identify weaknesses in the parameterisation of current continental-scale models.