Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 16, issue 11
Articles | Volume 16, issue 11
https://doi.org/10.5194/gmd-16-3203-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-16-3203-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 11
Development and technical paper
 | 
08 Jun 2023
Development and technical paper |  | 08 Jun 2023

A wind-driven snow redistribution module for Alpine3D v3.3.0: adaptations designed for downscaling ice sheet surface mass balance

Eric Keenan, Nander Wever, Jan T. M. Lenaerts, and Brooke Medley

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Short summary
Ice sheets gain mass via snowfall. However, snowfall is redistributed by the wind, resulting in accumulation differences of up to a factor of 5 over distances as short as 5 km. These differences complicate estimates of ice sheet contribution to sea level rise. For this reason, we have developed a new model for estimating wind-driven snow redistribution on ice sheets. We show that, over Pine Island Glacier in West Antarctica, the model improves estimates of snow accumulation variability.
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