Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1)

Pollard, David; DeConto, Robert M.

doi:https://doi.org/10.5194/gmd-13-6481-2020

Articles | Volume 13, issue 12

https://doi.org/10.5194/gmd-13-6481-2020

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

https://doi.org/10.5194/gmd-13-6481-2020

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

Articles | Volume 13, issue 12

Development and technical paper

|

22 Dec 2020

Development and technical paper |

| 22 Dec 2020

Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1)

David Pollard and Robert M. DeConto

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Final revised paper (published on 22 Dec 2020)
Preprint (discussion started on 25 May 2020)

Interactive discussion

Status: closed

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

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- Supplement

SC1: 'executive editor comment on gmd-2020-131', Astrid Kerkweg, 25 May 2020
- AC1: 'Reply: Model name and archive information', David Pollard, 29 May 2020
RC1: 'Review', Frank Pattyn, 24 Jun 2020
RC2: 'review of gmd-2020-131 (Pollard and DeConto)', Stephen Cornford, 06 Jul 2020
AC2: 'Planned response to comments and reviews', David Pollard, 21 Jul 2020

Peer-review completion

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

AR by David Pollard on behalf of the Authors (18 Aug 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (12 Oct 2020) by Philippe Huybrechts

RR by Frank Pattyn (25 Oct 2020)

ED: Publish subject to technical corrections (02 Nov 2020) by Philippe Huybrechts

AR by David Pollard on behalf of the Authors (05 Nov 2020) Author's response Manuscript

Short summary

Buttressing by floating ice shelves at ice-sheet grounding lines is an important process that affects ice retreat and whether structural failure occurs in deep bathymetry. Here, we use a simple algorithm to better represent 2-D grounding-line curvature in an ice-sheet model. Along with other enhancements, this improves the performance in idealized-fjord intercomparisons and enables better diagnosis of potential structural failure at future retreating Antarctic grounding lines.