Skip to Main content Skip to Navigation
Journal articles

One-to-one coupling of glacial climate variability in Greenland and Antarctica

C. Barbante 1, 2, 3 Jean-Marc Barnola 3, 4 Silvia Becagli 3, 5 J. Beer 3, 6 M. Bigler 3, 7 Claude Boutron 3, 4 T. Blunier 3, 7 E. Castellano 3, 5 O. Cattani 8, 9 Jérome Chappellaz 3, 4 D. Dahl-Jensen 3 Maxime Debret 4 Barbara Delmonte 10 D. Dick S. Falourd 8, 9 S. Faria 3 U. Federer 3 Hubertus Fischer 11 J. Freitag 11 A. Frenzel 11 D. Fritzsche 11 F. Fundel 11 Paolo Gabrielli 1, 4 V. Gaspari 10 R. Gersonde 11 W. Graf 12 D. Grigoriev 13 I. Hamann 11 M. Hansson 14 G. Hoffmann 8, 9 M. A. Hutterli 7, 15 P. Huybrechts 11, 16 E. Isaksson 17 S. Johnsen 7 Jean Jouzel 8, 9 M. Kaczmarska 17 T. Karlin 14 P. Kaufmann 7 S. Kipfstuhl 11 M. Kohno 11 F. Lambert 7 Anja Lambrecht 11 Astrid Lambrecht 11 A. Landais 8, 9 G. Lawer 11 M. Leuenberger 7 G. Littot 15 L. Loulergue 4 D. Lüthi 7 V. Maggi 10 F. Marino 10 Valérie Masson-Delmotte 8, 9 H. Meyer 11 H. Miller 11 R. Mulvaney 15 B. Narcisi 18 J. Oerlemans 19 H. Oerter 11 F. Parrenin 4 Jean-Robert Petit 4 G. Raisbeck 20 D. Raynaud 4 R. Röthlisberger 15 U. Ruth 11 O. Rybak 11 M. Severi 5 J. Schmitt 11 J. Schwander 7 U. Siegenthaler 7 M. L. Siggaard-Andersen 3 R. Spahni 7 J. P. Steffensen 3 B. Stenni 21 T. F. Stocker 7 J. L. Tison 22 R. Traversi 5 R. Udisti 5 F. Valero-Delgado 11 M. R. van den Broeke 19 R. S. W. Wan de Wal 19 D. Wagenbach 23 A. Wegner 11 K. Weiler 11 F. Wilhelms 11 J. G. Winther 17 E. Wolff 15
Abstract : Precise knowledge of the phase relationship between climate changes in the two hemispheres is a key for understanding the Earth's climate dynamics. For the last glacial period, ice core studies1, 2 have revealed strong coupling of the largest millennial-scale warm events in Antarctica with the longest Dansgaard–Oeschger events in Greenland3, 4, 5 through the Atlantic meridional overturning circulation6, 7, 8. It has been unclear, however, whether the shorter Dansgaard–Oeschger events have counterparts in the shorter and less prominent Antarctic temperature variations, and whether these events are linked by the same mechanism. Here we present a glacial climate record derived from an ice core from Dronning Maud Land, Antarctica, which represents South Atlantic climate at a resolution comparable with the Greenland ice core records. After methane synchronization with an ice core from North Greenland9, the oxygen isotope record from the Dronning Maud Land ice core shows a one-to-one coupling between all Antarctic warm events and Greenland Dansgaard–Oeschger events by the bipolar seesaw6. The amplitude of the Antarctic warm events is found to be linearly dependent on the duration of the concurrent stadial in the North, suggesting that they all result from a similar reduction in the meridional overturning circulation.
Document type :
Journal articles
Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-00375263
Contributor : Aurore Gayraud <>
Submitted on : Tuesday, April 14, 2009 - 1:37:16 PM
Last modification on : Saturday, January 9, 2021 - 11:40:02 AM

Links full text

Identifiers

Collections

Citation

C. Barbante, Jean-Marc Barnola, Silvia Becagli, J. Beer, M. Bigler, et al.. One-to-one coupling of glacial climate variability in Greenland and Antarctica. Nature, Nature Publishing Group, 2006, 444, pp.195 à 198. ⟨10.1038/nature05301⟩. ⟨insu-00375263⟩

Share

Metrics

Record views

739