Articles | Volume 12, issue 11
The Cryosphere, 12, 3409–3418, 2018
https://doi.org/10.5194/tc-12-3409-2018
The Cryosphere, 12, 3409–3418, 2018
https://doi.org/10.5194/tc-12-3409-2018

Brief communication 30 Oct 2018

Brief communication | 30 Oct 2018

Brief communication: Impact of the recent atmospheric circulation change in summer on the future surface mass balance of the Greenland Ice Sheet

Alison Delhasse et al.

Data sets

Reconstructions of the 1900–2015 Greenland ice sheet surface mass balance using the regional climate MAR model X. Fettweis, J. E. Box, C. Agosta, C. Amory, C. Kittel, C. Lang, C., D. van As, H. Machguth, and H. Gallée https://doi.org/10.5194/tc-11-1015-2017

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Short summary
Since the 2000s, an atmospheric circulation change (CC) gauged by a negative summer shift in the North Atlantic Oscillation has been observed, enhancing surface melt over the Greenland Ice Sheet (GrIS). Future GrIS surface mass balance (SMB) projections are based on global climate models that do not represent this CC. The model MAR has been used to show that previous estimates of these projections could have been significantly overestimated if this current circulation pattern persists.