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

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

doi:10.5194/tc-9-245-2015

Articles | Volume 9, issue 1

https://doi.org/10.5194/tc-9-245-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/tc-9-245-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

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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Oct 2014	115	113	7	235
Nov 2014	28	54	2	84
Dec 2014	12	30	2	44
Jan 2015	12	16	0	28
Feb 2015	107	77	4	188
Mar 2015	24	26	3	53
Apr 2015	37	13	1	51
May 2015	22	12	0	34
Jun 2015	28	10	0	38
Jul 2015	25	14	0	39
Aug 2015	10	24	1	35
Sep 2015	9	10	0	19
Oct 2015	19	11	8	38
Nov 2015	27	23	2	52
Dec 2015	9	13	3	25
Jan 2016	30	19	0	49
Feb 2016	22	13	2	37
Mar 2016	45	14	23	82
Apr 2016	9	10	1	20
May 2016	10	9	2	21
Jun 2016	8	4	1	13
Jul 2016	13	4	2	19
Aug 2016	14	12	0	26
Sep 2016	17	4	0	21
Oct 2016	11	4	0	15
Nov 2016	7	5	0	12
Dec 2016	6	9	1	16
Jan 2017	20	7	1	28
Feb 2017	16	2	2	20
Mar 2017	26	11	6	43
Apr 2017	28	11	6	45
May 2017	25	9	5	39
Jun 2017	27	17	4	48
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Aug 2017	5	10	1	16
Sep 2017	8	9	1	18
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Nov 2017	10	17	0	27
Dec 2017	8	11	0	19
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Feb 2018	6	5	0	11
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Jun 2018	8	12	0	20
Jul 2018	13	16	0	29
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Oct 2018	24	15	0	39
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Aug 2019	5	17	2	24
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May 2023	9	32	0	41
Jun 2023	16	54	1	71
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Oct 2023	12	14	1	27
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Dec 2023	18	19	4	41
Jan 2024	13	16	0	29
Feb 2024	11	14	0	25
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Apr 2024	16	19	7	42
May 2024	22	16	5	43
Jun 2024	19	11	1	31
Jul 2024	13	18	5	36
Aug 2024	32	18	6	56
Sep 2024	20	14	6	40
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Nov 2024	47	4	1	52
Dec 2024	18	13	0	31
Jan 2025	19	14	0	33
Feb 2025	48	14	0	62
Mar 2025	22	11	0	33
Apr 2025	28	15	0	43
May 2025	33	8	2	43
Jun 2025	37	20	1	58
Jul 2025	22	14	3	39
Aug 2025	24	19	0	43
Sep 2025	51	10	3	64
Oct 2025	30	20	2	52
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Cumulative views and downloads (calculated since 13 Oct 2014)

Month	HTML	PDF	XML	Total
Oct 2014	115	113	7	235
Nov 2014	28	54	2	84
Dec 2014	12	30	2	44
Jan 2015	12	16	0	28
Feb 2015	107	77	4	188
Mar 2015	24	26	3	53
Apr 2015	37	13	1	51
May 2015	22	12	0	34
Jun 2015	28	10	0	38
Jul 2015	25	14	0	39
Aug 2015	10	24	1	35
Sep 2015	9	10	0	19
Oct 2015	19	11	8	38
Nov 2015	27	23	2	52
Dec 2015	9	13	3	25
Jan 2016	30	19	0	49
Feb 2016	22	13	2	37
Mar 2016	45	14	23	82
Apr 2016	9	10	1	20
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Jul 2016	13	4	2	19
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Oct 2016	11	4	0	15
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May 2017	25	9	5	39
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Apr 2024	16	19	7	42
May 2024	22	16	5	43
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Aug 2024	32	18	6	56
Sep 2024	20	14	6	40
Oct 2024	21	10	0	31
Nov 2024	47	4	1	52
Dec 2024	18	13	0	31
Jan 2025	19	14	0	33
Feb 2025	48	14	0	62
Mar 2025	22	11	0	33
Apr 2025	28	15	0	43
May 2025	33	8	2	43
Jun 2025	37	20	1	58
Jul 2025	22	14	3	39
Aug 2025	24	19	0	43
Sep 2025	51	10	3	64
Oct 2025	30	20	2	52
Nov 2025	12	5	0	17

Latest update: 08 Nov 2025

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.