Articles | Volume 17, issue 1
Clim. Past, 17, 111–131, 2021
Clim. Past, 17, 111–131, 2021

Research article 12 Jan 2021

Research article | 12 Jan 2021

Can we reconstruct the formation of large open-ocean polynyas in the Southern Ocean using ice core records?

Hugues Goosse et al.

Data sets

Three reconstructions of the formation of large open ocean polynyas in the Southern Ocean using ice core records H. Goosse, Q. Dalaiden, M. G. P. Cavitte, and L. Zhang

The SCAR READER project: Toward a highquality database of mean Antarctic meteorological observations J. Turner, S. R. Colwell, G. J. Marshall, T. A. Lachlan-Cope, A. M. Carleton, P. D. Jones, V. Lagun, P. A. Reid, and S. Iagovkina<2890:TSRPTA>2.0.CO;2

New reconstruction of Antarctic near-surface temperatures: Multidecadal trends and reliability of global reanalyses Nicolas J. P. and Bromwich, D. H.:

PAGES Antarctica2k Temperature Reconstructions B. Stenni, M. A. J. Curran, N. J. Abram, A. J. Orsi, S. Goursaud, V. Masson-Delmotte, R. Neukom, H. Goosse, D. V. Divine, T. D. van Ommen, E. J. Steig, D. A. Dixon, E. R. Thomas, N. A. N. Bertler, E. Isaksson, A. A. Ekaykin, M. Werner, and M. Frezzotti

Antarctic regional snow accumulation composites over the past 1000 years E. R. Thomas

Increased snowfall over the Antarctic Ice Sheet mitigated twentieth-century sea-level rise B. Medley and E. R. Thomas

Historical climate model output of ECHAM5- wiso from 1871–2011 at T106 resolution N. J. Steiger

Short summary
Polynyas are ice-free oceanic areas within the sea ice pack. Small polynyas are regularly observed in the Southern Ocean, but large open-ocean polynyas have been rare over the past decades. Using records from available ice cores in Antarctica, we reconstruct past polynya activity and confirm that those events have also been rare over the past centuries, but the information provided by existing data is not sufficient to precisely characterize the timing of past polynya opening.