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)

Rückamp, Martin; Goelzer, Heiko; Humbert, Angelika

doi:https://doi.org/10.5194/tc-14-3309-2020

Articles | Volume 14, issue 10

https://doi.org/10.5194/tc-14-3309-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Ice Sheet Model Intercomparison Project for CMIP6...

https://doi.org/10.5194/tc-14-3309-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 10

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, Heiko Goelzer, and Angelika Humbert

Supplement

https://doi.org/10.5194/tc-14-3309-2020-supplement

Data sets

Results of "Sensitivity of Greenland ice sheet projections to spatial resolution in higher-order simulations: the AWI contribution to ISMIP6-Greenland using ISSM" Martin Rückamp, Heiko Goelzer, Angelika Humbert https://doi.org/10.5281/zenodo.3992605

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.