Articles | Volume 9, issue 4
Research article
 | Highlight paper
07 Aug 2015
Research article | Highlight paper |  | 07 Aug 2015

Impact of model developments on present and future simulations of permafrost in a global land-surface model

S. E. Chadburn, E. J. Burke, R. L. H. Essery, J. Boike, M. Langer, M. Heikenfeld, P. M. Cox, and P. Friedlingstein

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Manuscript not accepted for further review
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Cited articles

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Beringer, J., Lynch, A. H., Chapin, F. S., 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,<3324:TROASI>2.0.CO;2, 2001.
Best, M. J., Pryor, M., Clark, D. B., Rooney, G. G., Essery, R. L. H., Ménard, C. B., Edwards, J. M., Hendry, M. A., Porson, A., Gedney, N., Mercado, L. M., Sitch, S., Blyth, E., Boucher, O., Cox, P. M., Grimmond, C. S. B., and Harding, R. J.: The Joint UK Land Environment Simulator (JULES), model description – Part 1: Energy and water fluxes, Geosci. Model Dev., 4, 677–699,, 2011.
Bosilovich, M. G., Chen, J., Robertson, F. R., and Adler, R. F.: Evaluation of global precipitation in reanalyses, J. Appl. Meteorol. Clim., 47, 2279–2299,, 2008.
Short summary
In this paper we use a global land-surface model to study the dynamics of Arctic permafrost. We examine the impact of new and improved processes in the model, namely soil depth and resolution, organic soils, moss and the representation of snow. These improvements make the simulated soil temperatures and thaw depth significantly more realistic. Simulations under future climate scenarios show that permafrost thaws more slowly in the new model version, but still a large amount is lost by 2100.