Articles | Volume 14, issue 12
The Cryosphere, 14, 4611–4626, 2020
https://doi.org/10.5194/tc-14-4611-2020
The Cryosphere, 14, 4611–4626, 2020
https://doi.org/10.5194/tc-14-4611-2020

Research article 18 Dec 2020

Research article | 18 Dec 2020

Projecting circum-Arctic excess-ground-ice melt with a sub-grid representation in the Community Land Model

Lei Cai et al.

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Short summary
A sub-grid representation of excess ground ice in the Community Land Model (CLM) is developed as novel progress in modeling permafrost thaw and its impacts under the warming climate. The modeled permafrost degradation with sub-grid excess ice follows the pathway that continuous permafrost transforms into discontinuous permafrost before it disappears, including surface subsidence and talik formation, which are highly permafrost-relevant landscape changes excluded from most land models.