Articles | Volume 14, issue 10
The Cryosphere, 14, 3309–3327, 2020
https://doi.org/10.5194/tc-14-3309-2020

Special issue: The Ice Sheet Model Intercomparison Project for CMIP6...

The Cryosphere, 14, 3309–3327, 2020
https://doi.org/10.5194/tc-14-3309-2020

Research article 02 Oct 2020

Research article | 02 Oct 2020

Sensitivity of Greenland ice sheet projections to spatial resolution in higher-order simulations: the Alfred Wegener Institute (AWI) contribution to ISMIP6 Greenland using the Ice-sheet and Sea-level System Model (ISSM)

Martin Rückamp et al.

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Latest update: 23 Sep 2021
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Short summary
Estimates of future sea-level contribution from the Greenland ice sheet have a large uncertainty based on different origins. We conduct numerical experiments to test the sensitivity of Greenland ice sheet projections to spatial resolution. Simulations with a higher resolution unveil up to 5 % more sea-level rise compared to coarser resolutions. The sensitivity depends on the magnitude of outlet glacier retreat. When no retreat is enforced, the sensitivity exhibits an inverse behaviour.