Articles | Volume 9, issue 1
https://doi.org/10.5194/tc-9-245-2015
https://doi.org/10.5194/tc-9-245-2015
Research article
 | 
09 Feb 2015
Research article |  | 09 Feb 2015

Heat sources within the Greenland Ice Sheet: dissipation, temperate paleo-firn and cryo-hydrologic warming

M. P. Lüthi, C. Ryser, L. C. Andrews, G. A. Catania, M. Funk, R. L. Hawley, M. J. Hoffman, and T. A. Neumann

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Cited articles

Ahlstrom, A. P.: Previous glaciological activities related to hydropower at Paakitsoq, Ilulissat, West Greenland, Tech. Rep., 25, Danmarks og Grønlands Geologiske Undersøgelse, 2007.
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.
Box, J. E.: Greenland Ice Sheet mass balance reconstruction, Part II: Surface mass balance (1840–2010), J. Climate, 26, 6974–6989, https://doi.org/10.1175/JCLI-D-12-00518.1, 2013
Budd, W., Jacka, T., Jenssen, D., Radok, U., and Young, N.: Derived physical characteristics of the Greenland Ice Sheet, Meteor. Dept. Pub. no. 23, University of Melbourne, Melbourne, 1982.
Catania, G. A. and Neumann, T. A.: Persistent englacial drainage features in the Greenland Ice Sheet, Geophys. Res. Lett., 37, L02501, https://doi.org/10.1029/2009GL041108, 2010.
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Short summary
We analyze the thermal structure of the Greenland Ice Sheet with a heat flow model. New borehole measurements indicate that more heat is stored within the ice than would be expected from heat diffusion alone. We conclude that temperate paleo-firn and cyro-hydrologic warming are essential processes that explain the measurements.