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Volume 10, issue 9 | Copyright

Special issue: The externalised surface model SURFEX

Geosci. Model Dev., 10, 3461-3479, 2017
https://doi.org/10.5194/gmd-10-3461-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Model evaluation paper 21 Sep 2017

Model evaluation paper | 21 Sep 2017

Evaluating the performance of coupled snow–soil models in SURFEXv8 to simulate the permafrost thermal regime at a high Arctic site

Mathieu Barrere et al.
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Cited articles
ADAPT 2014: Carbon, nitrogen and water content of the active layer from sites across the Canadian Arctic, v. 1.0, Nordicana D20, https://doi.org/10.5885/45327AD-5245D08606AB4F52, 2014.
Allard, M.: Geomorphological changes and permafrost dynamics: Key factors in changing Arctic ecosystems. An example from Bylot Island, Nunavut, Canada, Geosci. Canada, 23, 205–224, 1996.
Barrere, M. and Domine, F.: Snow, soil and meteorological data at Bylot Island for simulating the permafrost thermal regime and evaluating output of the SURFEXv8 land surface scheme, v. 1.0 (1979–2015),Nordicana D29, https://doi.org/10.5885/45460CE-9B80A99D55F94D95, 2017.
Bartelt, P. and Lehning, M.: A physical SNOWPACK model for the Swiss avalanche warning: Part I: numerical model, Cold Reg. Sci. Technol., 35, 123–145, https://doi.org/10.1016/S0165-232X(02)00074-5, 2002.
Beringer, J., Lynch, A. H., Chapin, F. S. I., Mack, M., and Bonan, G. B.: The representation of arctic soils in the land surface model: The importance of mosses, J. Climate, 14, 3324–3335, https://doi.org/10.1175/1520-0442(2001)014<3324:TROASI>2.0.CO;2, 2001.
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Short summary
Global warming projections still suffer from a limited representation of the permafrost–carbon feedback. This study assesses the capacity of snow-soil coupled models to simulate the permafrost thermal regime at Bylot Island, a high Arctic site. Significant flaws are found in the description of Arctic snow properties, resulting in erroneous heat transfers between the soil and the snow in simulations. Improved snow schemes are needed to accurately predict the future of permafrost.
Global warming projections still suffer from a limited representation of the permafrost–carbon...
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