The Cryosphere
The Cryosphere
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Articles | Volume 20, issue 9
Articles | Volume 20, issue 9
https://doi.org/10.5194/tc-20-4973-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-4973-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 9
Research article
 | 
03 Sep 2026
Research article |  | 03 Sep 2026

Dry snow initialization and densification over the Greenland and Antarctic ice sheets in the ORCHIDEE land surface model

Philippe Conesa, Cécile Agosta, Sylvie Charbit, Christophe Dumas, Simon Beylat, and Nina Raoult

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Short summary
As Greenland and Antarctic ice sheets are almost entirely covered by snow, a proper modelling of the internal snowpack processes is essential to predict their evolution. This study evaluates the snow densification over ice sheets in the ORCHIDEE (Organising Carbon and Hydrology In Dynamic Ecosystems) land surface model. The development of a new formulation for the surface snow density and the calibration of densification parameters improve the model agreement with polar snow observations.
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