The Cryosphere
The Cryosphere
TC
Articles | Volume 16, issue 1
Articles | Volume 16, issue 1
https://doi.org/10.5194/tc-16-143-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-143-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 1
Research article
 | 
14 Jan 2022
Research article |  | 14 Jan 2022

On the contribution of grain boundary sliding type creep to firn densification – an assessment using an optimization approach

Timm Schultz, Ralf Müller, Dietmar Gross, and Angelika Humbert

Supplement

https://doi.org/10.5194/tc-16-143-2022-supplement

Data sets

Surface Mass Balance and Snow Depth on Sea Ice Working Group (SUMup) snow density subdataset, Greenland and Antarctica, 1950-2018 L. Koenig and L. Montgomery https://doi.org/10.18739/A26D5PB2S

Accumulation rate and stable oxygen isotpoe ratios of ice core ngt03C93.2 form the North Greenland Traverse H. Miller and M. Schwager https://doi.org/10.1594/PANGAEA.218274

Density of ice core ngt03C93.2 from the North Greenland Traverse F. Wilhelms https://doi.org/10.1594/PANGAEA.56560

ERA5-Land hourly data from 1981 to present J. Muñoz Sabater https://doi.org/10.24381/cds.e2161bac

Model code and software

Implementation of a firn densification model including an optimization approach as used in Schultz et al., The Cryosphere T. Schultz https://doi.org/10.5281/zenodo.5771956

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Short summary
Firn is the interstage product between snow and ice. Simulations describing the process of firn densification are used in the context of estimating mass changes of the ice sheets and past climate reconstructions. The first stage of firn densification takes place in the upper few meters of the firn column. We investigate how well a material law describing the process of grain boundary sliding works for the numerical simulation of firn densification in this stage.
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