Articles | Volume 14, issue 11
The Cryosphere, 14, 3935–3958, 2020
https://doi.org/10.5194/tc-14-3935-2020

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

The Cryosphere, 14, 3935–3958, 2020
https://doi.org/10.5194/tc-14-3935-2020

Research article 11 Nov 2020

Research article | 11 Nov 2020

GrSMBMIP: intercomparison of the modelled 1980–2012 surface mass balance over the Greenland Ice Sheet

Xavier Fettweis et al.

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Short summary
We evaluated simulated Greenland Ice Sheet surface mass balance from 5 kinds of models. While the most complex (but expensive to compute) models remain the best, the faster/simpler models also compare reliably with observations and have biases of the same order as the regional models. Discrepancies in the trend over 2000–2012, however, suggest that large uncertainties remain in the modelled future SMB changes as they are highly impacted by the meltwater runoff biases over the current climate.