Articles | Volume 15, issue 8
The Cryosphere, 15, 3751–3784, 2021
https://doi.org/10.5194/tc-15-3751-2021

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

The Cryosphere, 15, 3751–3784, 2021
https://doi.org/10.5194/tc-15-3751-2021
Research article
17 Aug 2021
Research article | 17 Aug 2021

What is the surface mass balance of Antarctica? An intercomparison of regional climate model estimates

Ruth Mottram et al.

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Latest update: 04 Jul 2022
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Short summary
We compare the calculated surface mass budget (SMB) of Antarctica in five different regional climate models. On average ~ 2000 Gt of snow accumulates annually, but different models vary by ~ 10 %, a difference equivalent to ± 0.5 mm of global sea level rise. All models reproduce observed weather, but there are large differences in regional patterns of snowfall, especially in areas with very few observations, giving greater uncertainty in Antarctic mass budget than previously identified.