Direct measurement of warm Atlantic Intermediate Water close to the grounding line of Nioghalvfjerdsfjorden (79°&thinsp;N) Glacier, northeast Greenland

Bentley, Michael J.; Smith, James A.; Jamieson, Stewart S. R.; Lindeman, Margaret R.; Rea, Brice R.; Humbert, Angelika; Lane, Timothy P.; Darvill, Christopher M.; Lloyd, Jeremy M.; Straneo, Fiamma; Helm, Veit; Roberts, David H.

doi:https://doi.org/10.5194/tc-17-1821-2023

Articles | Volume 17, issue 5

https://doi.org/10.5194/tc-17-1821-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-17-1821-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 5

Research article

|

05 May 2023

Research article |

| 05 May 2023

Direct measurement of warm Atlantic Intermediate Water close to the grounding line of Nioghalvfjerdsfjorden (79° N) Glacier, northeast Greenland

Michael J. Bentley, James A. Smith, Stewart S. R. Jamieson, Margaret R. Lindeman, Brice R. Rea, Angelika Humbert, Timothy P. Lane, Christopher M. Darvill, Jeremy M. Lloyd, Fiamma Straneo, Veit Helm, and David H. Roberts

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Final revised paper (published on 05 May 2023)
Preprint (discussion started on 01 Nov 2022)

Interactive discussion

Status: closed

RC1:
'Comment on tc-2022-206', Anonymous Referee #1, 07 Dec 2022

The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2022-206/tc-2022-206-RC1-supplement.pdf

Citation: https://doi.org/10.5194/tc-2022-206-RC1
- AC1: 'Reply on RC1', Mike Bentley, 01 Feb 2023
  
  The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2022-206/tc-2022-206-AC1-supplement.pdf
  
  Citation: https://doi.org/10.5194/tc-2022-206-AC1
RC2:
'Comment on tc-2022-206', Derek Mueller, 17 Dec 2022

The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2022-206/tc-2022-206-RC2-supplement.pdf

Citation: https://doi.org/10.5194/tc-2022-206-RC2
- AC2: 'Reply on RC2', Mike Bentley, 01 Feb 2023
  
  The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2022-206/tc-2022-206-AC2-supplement.pdf
  
  Citation: https://doi.org/10.5194/tc-2022-206-AC2
CC1:
'Comment on tc-2022-206', Jérémie Bonneau, 19 Dec 2022

Great paper, see attached supplement for unsolicited comments.

Citation: https://doi.org/10.5194/tc-2022-206-CC1
- AC3: 'Reply on CC1', Mike Bentley, 01 Feb 2023
  
  The comment was uploaded in the form of a supplement: https://tc.copernicus.org/preprints/tc-2022-206/tc-2022-206-AC3-supplement.pdf
  
  Citation: https://doi.org/10.5194/tc-2022-206-AC3

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload

ED: Publish subject to minor revisions (review by editor) (03 Feb 2023) by Ginny Catania

AR by Mike Bentley on behalf of the Authors (01 Mar 2023) Author's response Manuscript

EF by Polina Shvedko (03 Mar 2023) Author's tracked changes

ED: Publish as is (13 Mar 2023) by Ginny Catania

AR by Mike Bentley on behalf of the Authors (23 Mar 2023)

Short summary

The Northeast Greenland Ice Stream is a major outlet of the Greenland Ice Sheet. Some of its outlet glaciers and ice shelves have been breaking up and retreating, with inflows of warm ocean water identified as the likely reason. Here we report direct measurements of warm ocean water in an unusual lake that is connected to the ocean beneath the ice shelf in front of the 79° N Glacier. This glacier has not yet shown much retreat, but the presence of warm water makes future retreat more likely.