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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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (02 Aug 2020) by Ayako Abe-Ouchi
AR by Lorena Grabowski on behalf of the Authors (12 Nov 2020)  Author's response
ED: Referee Nomination & Report Request started (14 Nov 2020) by Ayako Abe-Ouchi
RR by Anonymous Referee #2 (07 Dec 2020)
RR by Jan Lenaerts (09 Dec 2020)
ED: Publish subject to revisions (further review by editor and referees) (21 Dec 2020) by Ayako Abe-Ouchi
AR by Ruth Mottram on behalf of the Authors (27 Jan 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (29 Jan 2021) by Ayako Abe-Ouchi
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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.