Improved modeling of permafrost dynamics in a GCM land-surface scheme

Global climate models (GCM) are frequently used to understand and predict future climate change, but most GCMs do not attempt to represent permafrost dynamics and its potentially critical feedbacks on climate. In this paper, we evaluate the Community Land Model (CLM3), which is a land-surface scheme, against observations and identify potential modifications to this model that improve fidelity of permafrost and soil temperature simulations. These modifications include increasing the total soil depth by adding new layers, incorporating a surface organic layer, and modifying the numerical scheme to include unfrozen water dynamics and more realistic phase change representation.

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Copyright 2007 American Geophysical Union.
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Author Nicolsky, D.
Romanovsky, V.
Alexeev, V.
Lawrence, David M.
Publisher UCAR/NCAR - Library
Publication Date 2007-04-18T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T17:02:30.569998
Metadata Record Identifier edu.ucar.opensky::articles:6896
Metadata Language eng; USA
Suggested Citation Nicolsky, D., Romanovsky, V., Alexeev, V., Lawrence, David M.. (2007). Improved modeling of permafrost dynamics in a GCM land-surface scheme. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d7cj8drx. Accessed 11 August 2025.

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