Articles | Volume 13, issue 2
The Cryosphere, 13, 591–609, 2019
https://doi.org/10.5194/tc-13-591-2019
The Cryosphere, 13, 591–609, 2019
https://doi.org/10.5194/tc-13-591-2019

Research article 18 Feb 2019

Research article | 18 Feb 2019

Thaw processes in ice-rich permafrost landscapes represented with laterally coupled tiles in a land surface model

Kjetil S. Aas et al.

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Cited articles

Aas, K. S., Gisnas, K., Westermann, S., and Berntsen, T. K.: A Tiling Approach to Represent Subgrid Snow Variability in Coupled Land Surface-Atmosphere Models, J. Hydrometeorol., 18, 49–63, https://doi.org/10.1175/JHM-D-16-0026.1, 2017. 
Aune, B.: Temperaturnormaler, normalperiode 1961–1990, Nor. Meteorol. Inst. Rapp. Klima, 1993, 1–63, 1993. 
Beer, C.: Permafrost Sub-grid Heterogeneity of Soil Properties Key for 3-D Soil Processes and Future Climate Projections, Front. Earth Sci., 4, 81 pp., https://doi.org/10.3389/feart.2016.00081, 2016. 
Bisht, G., Riley, W. J., Wainwright, H. M., Dafflon, B., Yuan, F., and Romanovsky, V. E.: Impacts of microtopographic snow redistribution and lateral subsurface processes on hydrologic and thermal states in an Arctic polygonal ground ecosystem: a case study using ELM-3D v1.0, Geosci. Model Dev., 11, 61–76, https://doi.org/10.5194/gmd-11-61-2018, 2018. 
Boike, J., Wille, C., and Abnizova, A.: Climatology and summer energy and water balance of polygonal tundra in the Lena River Delta, Siberia, J. Geophys. Res., 113, G03025, https://doi.org/10.1029/2007JG000540, 2008. 
Short summary
Many permafrost landscapes contain large amounts of excess ground ice, which gives rise to small-scale elevation differences. This results in lateral fluxes of snow, water, and heat, which we investigate and show how it can be accounted for in large-scale models. Using a novel model technique which can account for these differences, we are able to model both the current state of permafrost and how these landscapes change as permafrost thaws, in a way that could not previously be achieved.