Articles | Volume 11, issue 1
https://doi.org/10.5194/esurf-11-33-2023
https://doi.org/10.5194/esurf-11-33-2023
Research article
 | 
27 Jan 2023
Research article |  | 27 Jan 2023

Simulating the effect of subsurface drainage on the thermal regime and ground ice in blocky terrain in Norway

Cas Renette, Kristoffer Aalstad, Juditha Aga, Robin Benjamin Zweigel, Bernd Etzelmüller, Karianne Staalesen Lilleøren, Ketil Isaksen, and Sebastian Westermann

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Cited articles

Aalstad, K., Westermann, S., Schuler, T. V., Boike, J., and Bertino, L.: Ensemble-based assimilation of fractional snow-covered area satellite retrievals to estimate the snow distribution at Arctic sites, The Cryosphere, 12, 247–270, https://doi.org/10.5194/tc-12-247-2018, 2018. 
Arenson, L. U., Phillips, M., and Springman, S. M.: Geotechnical considerations and technical solutions for infrastructure in mountain permafrost, in: New permafrost and glacier research, Nova Science Publishers, 3–50, https://www.dora.lib4ri.ch/wsl/islandora/object/wsl:27279 (last access: 26 January 2023), 2009. 
Azócar, G. and Brenning, A.: Hydrological and geomorphological significance of rock glaciers in the dry Andes, Chile (27–33 S), Permafrost Periglac., 21, 42–53, https://doi.org/10.1002/ppp.669, 2010. 
Croce, F. A. and Milana, J. P.: Internal structure and behaviour of a rock glacier in the arid Andes of Argentina, Permafrost Periglac., 13, 289–299, https://doi.org/10.1002/ppp.431, 2002. 
Dahl, R.: Block fields, weathering pits and tor-like forms in the Narvik Mountains, Nordland, Norway, Geogr. Ann. A, 48, 55–85, https://doi.org/10.1080/04353676.1966.11879730, 1966. 
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Short summary
One of the reasons for lower ground temperatures in coarse, blocky terrain is a low or varying soil moisture content, which most permafrost modelling studies did not take into account. We used the CryoGrid community model to successfully simulate this effect and found markedly lower temperatures in well-drained, blocky deposits compared to other set-ups. The inclusion of this drainage effect is another step towards a better model representation of blocky mountain terrain in permafrost regions.