Articles | Volume 11, issue 1
The Cryosphere, 11, 303–317, 2017
https://doi.org/10.5194/tc-11-303-2017
The Cryosphere, 11, 303–317, 2017
https://doi.org/10.5194/tc-11-303-2017
Research article
30 Jan 2017
Research article | 30 Jan 2017

The past, present, and future viscous heat dissipation available for Greenland subglacial conduit formation

Kenneth D. Mankoff and Slawek M. Tulaczyk

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Cited articles

Alley, R. B., Lawson, D. E., Evenson, E. B., Strasser, J. C., and Larson, G. J.: Glaciohydraulic supercooling: a freeze-on mechanism to create stratified, debris-rich basal ice: II. Theory, J. Glaciol., 44, 563–569, 1998.
Andrews, L. C., Catania, G. A., Hoffman, M. J., Gulley, J. D., Lüthi, M. P., Ryser, C., Hawley, R. L., and Neumann, T. A.: Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet, Nature, 514, 80–83, https://doi.org/10.1038/nature13796, 2014.
Arnold, N. S., Banwell, A. F., and Willis, I. C.: High-resolution modelling of the seasonal evolution of surface water storage on the Greenland Ice Sheet, The Cryosphere, 8, 1149–1160, https://doi.org/10.5194/tc-8-1149-2014, 2014.
Banwell, A. F., Willis, I. C., and Arnold, N. S.: Modelling subglacial water routing at Paakitsoq, W Greenland, J. Geophys. Res.-Ea. Surf., 118, 1282–1295, https://doi.org/10.1002/jgrf.20093, 2013.
Bartholomew, I. D., Nienow, P. W., Mair, D. W. F., Hubbard, A., King, M. A., and Sole, A. J.: Seasonal evolution of subglacial drainage and acceleration in a Greenland outlet glacier, Nat. Geosci., 3, 408–411, https://doi.org/10.1038/NGEO863, 2010.
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Short summary
There may be a ~ 7-fold increases in heat at the bed of Greenland by the end of the century due to increased runoff. The impact this will have on the ice is uncertain, but recent results indicate more heat may reduced glacier velocity near the margin, and accelerate it in the interior. We used existing model output of Greenland surface melt, ice sheet surface, and basal topography. All code needed to recreate the results, using free software, is included.