Preprints
https://doi.org/10.5194/egusphere-2022-94
https://doi.org/10.5194/egusphere-2022-94
 
11 Apr 2022
11 Apr 2022

Influence of fast ice on future ice shelf melting in the Totten Glacier area, East Antarctica

Guillian Van Achter1, Thierry Fichefet1, Hugues Goosse1, and Eduardo Moreno-Chamarro2 Guillian Van Achter et al.
  • 1Earth and Life Institute, Georges Lemaitre Centre for Earth and Climate Research, UCLouvain, Louvain-la-Neuve, Belgium
  • 2Barcelona Supercomputing Center (BSC), Barcelona, 08034, Spain

Abstract. The Totten Glacier in East Antarctica is of major climatic interest because of the large fluctuations of its grounding line and potential vulnerability to climate change. Here, we use a series of high-resolution, regional NEMO-LIM-based experiments, which include an explicit treatment of ocean–ice shelf interactions as well as a representation of grounded icebergs and fast ice, to investigate the changes in ocean–ice interactions in the Totten Glacier area between the last decades (1995–2014) and the end of the 21st century (2081–2100) under SSP4–4.5 climate change conditions. By the end of the 21st century, the wide areas of multiyear fast ice simulated in the recent past are replaced by small patches of first year fast ice along the coast, which decreases the total summer sea ice extent. The Antarctic Slope Current is accelerated by more than 90 % and the Totten ice shelf melt rate is increased by 41 % due to enhanced warm water intrusions into its cavity. The representation of fast ice dampens the ice shelf melt rate increase, as the Totten ice shelf melt rate increase reaches 58 % when fast ice is not taken into account. The Moscow University ice shelf melt rate increase is even more impacted by the representation of fast ice, with a 1 % melt rate increase with fast ice, compared to a 38 % increase without a fast ice representation. This highlights the importance of including representation of fast ice to simulate realistic ice shelf melt rate increase in East Antarctica under warming conditions.

Journal article(s) based on this preprint

15 Nov 2022
Influence of fast ice on future ice shelf melting in the Totten Glacier area, East Antarctica
Guillian Van Achter, Thierry Fichefet, Hugues Goosse, and Eduardo Moreno-Chamarro
The Cryosphere, 16, 4745–4761, https://doi.org/10.5194/tc-16-4745-2022,https://doi.org/10.5194/tc-16-4745-2022, 2022
Short summary

Guillian Van Achter et al.

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-94', Anonymous Referee #1, 17 May 2022
    • AC1: 'Reply on RC1', Guillian Van Achter, 24 Aug 2022
  • RC2: 'Comment on egusphere-2022-94', Anonymous Referee #2, 05 Jul 2022
    • AC2: 'Reply on RC2', Guillian Van Achter, 24 Aug 2022

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-94', Anonymous Referee #1, 17 May 2022
    • AC1: 'Reply on RC1', Guillian Van Achter, 24 Aug 2022
  • RC2: 'Comment on egusphere-2022-94', Anonymous Referee #2, 05 Jul 2022
    • AC2: 'Reply on RC2', Guillian Van Achter, 24 Aug 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (31 Aug 2022) by Christian Haas
AR by Guillian Van Achter on behalf of the Authors (01 Sep 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (03 Sep 2022) by Christian Haas
RR by Anonymous Referee #1 (15 Sep 2022)
ED: Publish subject to revisions (further review by editor and referees) (18 Sep 2022) by Christian Haas
AR by Guillian Van Achter on behalf of the Authors (29 Sep 2022)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (09 Oct 2022) by Christian Haas
RR by Anonymous Referee #1 (20 Oct 2022)
ED: Publish as is (30 Oct 2022) by Christian Haas

Journal article(s) based on this preprint

15 Nov 2022
Influence of fast ice on future ice shelf melting in the Totten Glacier area, East Antarctica
Guillian Van Achter, Thierry Fichefet, Hugues Goosse, and Eduardo Moreno-Chamarro
The Cryosphere, 16, 4745–4761, https://doi.org/10.5194/tc-16-4745-2022,https://doi.org/10.5194/tc-16-4745-2022, 2022
Short summary

Guillian Van Achter et al.

Guillian Van Achter et al.

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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

Short summary
We investigate the changes in ocean–ice interactions in the Totten Glacier area between the last decades (1995–2014) and the end of the 21st century (2081–2100) under warmer climate conditions. By the end of the 21st century, the sea ice is strongly reduced and the ocean circulation close to the coast is accelerated. Our research highlights the importance of including representation of fast ice to simulate realistic ice shelf melt rate increase in East Antarctica under warming conditions.