Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream

Smith-Johnsen, Silje; de Fleurian, Basile; Schlegel, Nicole; Seroussi, Helene; Nisancioglu, Kerim

doi:https://doi.org/10.5194/tc-14-841-2020

Articles | Volume 14, issue 3

https://doi.org/10.5194/tc-14-841-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-14-841-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 3

Research article

|

06 Mar 2020

Research article |

| 06 Mar 2020

Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream

Silje Smith-Johnsen, Basile de Fleurian, Nicole Schlegel, Helene Seroussi, and Kerim Nisancioglu

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Final revised paper (published on 06 Mar 2020)
Preprint (discussion started on 30 Sep 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Reviewer Comments - Exceptionally High Geothermal Heat Flux Needed to Sustain the Northeast Greenland Ice Stream', Nicholas Holschuh, 29 Oct 2019
- AC1: 'Response to Nicholas Holschuh', Silje Smith-Johnsen, 20 Dec 2019
RC2: 'Review', Signe Hillerup Larsen, 07 Nov 2019
- AC2: 'Reponse to Signe Hillerup Larsen', Silje Smith-Johnsen, 20 Dec 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (08 Jan 2020) by Nanna Bjørnholt Karlsson

AR by Silje Smith-Johnsen on behalf of the Authors (09 Jan 2020) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (27 Jan 2020) by Nanna Bjørnholt Karlsson

AR by Basile de Fleurian on behalf of the Authors (03 Feb 2020) Author's response Manuscript

ED: Publish as is (06 Feb 2020) by Nanna Bjørnholt Karlsson

AR by Basile de Fleurian on behalf of the Authors (07 Feb 2020) Manuscript

Short summary

The Northeast Greenland Ice Stream (NEGIS) drains a large part of Greenland and displays fast flow far inland. However, the flow pattern is not well represented in ice sheet models. The fast flow has been explained by abnormally high geothermal heat flux. The heat melts the base of the ice sheet and the water produced may lubricate the bed and induce fast flow. By including high geothermal heat flux and a hydrology model, we successfully reproduce NEGIS flow pattern in an ice sheet model.