Articles | Volume 18, issue 1
https://doi.org/10.5194/cp-18-129-2022
https://doi.org/10.5194/cp-18-129-2022
Research article
 | 
24 Jan 2022
Research article |  | 24 Jan 2022

Reconstructing Antarctic winter sea-ice extent during Marine Isotope Stage 5e

Matthew Chadwick, Claire S. Allen, Louise C. Sime, Xavier Crosta, and Claus-Dieter Hillenbrand

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The role of Antarctic sea ice in the Earth system: Perspectives informed by 130,000 years of sea ice records
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This preprint is open for discussion and under review for Climate of the Past (CP).
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Cited articles

Abernathey, R. P., Cerovecki, I., Holland, P. R., Newsom, E., Mazloff, M., and Talley, L. D.: Water-mass transformation by sea ice in the upper branch of the Southern Ocean overturning, Nat. Geosci., 9, 596–601, 2016. 
Anderson, R., Kalk, P., Froelich, F., Flleisher, M., Bouchard, G., and Schwartz, R.: PA9802-04-01, Lamont-Doherty Core Repository at Columbia University (LDCR) [sample], available at: http://igsn.org/DSR0003YW (last access: 18 January 2022), 1998. 
Armand, L. and Leventer, A.: Palaeo sea ice distribution and reconstruction derived from the geological records, in: Sea Ice, 2nd edn., edited by: Thomas, D. N. and Dieckmann, G. S., Wiley-Blackwell, https://doi.org/10.1002/9781444317145.ch13, 2010. 
Armand, L. K., Crosta, X., Romero, O., and Pichon, J.-J.: The biogeography of major diatom taxa in Southern Ocean sediments: 1. Sea ice related species, Palaeogeogr. Palaeocl., 223, 93–126, 2005. 
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Short summary
Algae preserved in marine sediments have allowed us to reconstruct how much winter sea ice was present around Antarctica during a past time period (130 000 years ago) when the climate was warmer than today. The patterns of sea-ice increase and decrease vary between different parts of the Southern Ocean. The Pacific sector has a largely stable sea-ice extent, whereas the amount of sea ice in the Atlantic sector is much more variable with bigger decreases and increases than other regions.
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