Preprints
https://doi.org/10.5194/essd-2022-398
https://doi.org/10.5194/essd-2022-398
22 Dec 2022
 | 22 Dec 2022
Status: a revised version of this preprint was accepted for the journal ESSD.

Antarctic ice sheet paleo-constraint database

Benoit S. Lecavalier, Lev Tarasov, Greg Balco, Perry Spector, Claus-Dieter Hillenbrand, Christo Buizert, Catherine Ritz, Marion Leduc-Leballeur, Robert Mulvaney, Pippa L. Whitehouse, Michael J. Bentley, and Jonathan Bamber

Abstract. We present a database of observational constraints on past Antarctic ice sheet changes during the last glacial cycle intended to consolidate the observations that represent our understanding of past Antarctic changes, for state-space estimation, and paleo-model calibrations. The database is a major expansion of the initial work of Briggs and Tarasov (2013). It includes new data types and multi-tier data quality assessment. The updated constraint database “AntICE2” consists of observations of past grounded and floating ice sheet extent, past ice thickness, past relative sea level, borehole temperature profiles, and present-day bedrock displacement rates. In addition to paleo-observations, the present-day ice sheet geometry and surface ice velocities are incorporated to constrain the present-day ice sheet configuration. The method by which the data is curated using explicitly defined criteria is detailed. Moreover, the observational uncertainties are specified. The methodology by which the constraint database can be applied to evaluate a given ice sheet reconstruction is discussed. The implementation of the “AntICE2” database for Antarctic ice sheet model calibrations will improve Antarctic ice sheet predictions during past warm and cold periods and yield more robust paleo model spin ups for forecasting future ice sheet changes.

Benoit S. Lecavalier et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Review of Lecavalier et al., (2022), ESSD', Torsten Albrecht, 07 Feb 2023
    • AC1: 'Reply on RC1', Benoit Lecavalier, 11 May 2023
  • RC2: 'Comment on essd-2022-398', Steven Phipps, 18 Apr 2023
    • AC2: 'Reply on RC2', Benoit Lecavalier, 11 May 2023

Benoit S. Lecavalier et al.

Benoit S. Lecavalier et al.

Viewed

Total article views: 790 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
587 189 14 790 45 5 10
  • HTML: 587
  • PDF: 189
  • XML: 14
  • Total: 790
  • Supplement: 45
  • BibTeX: 5
  • EndNote: 10
Views and downloads (calculated since 22 Dec 2022)
Cumulative views and downloads (calculated since 22 Dec 2022)

Viewed (geographical distribution)

Total article views: 768 (including HTML, PDF, and XML) Thereof 768 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 06 Jun 2023
Download
Short summary
The Antarctic ice sheet evolution constraint database version 2 (AntICE2) consists of a large variety of observations that constrain the evolution of the Antarctic ice sheet over the last glacial cycle. This includes observations of past ice sheet extent, past ice thickness, past relative sea level, borehole temperature profiles, and present-day bedrock displacement rates. The database is intended to improve our understanding of past Antarctic changes and for ice sheet model calibrations.