Dansgaard–Oeschger events: an oscillation of the climate-ice-sheet system?

Dansgaard–Oeschger events are warm events appearing and disappearing abruptly within the last glacial period. Several mechanisms have been put forward to explain these rapid climatic switches: forced oscillations of the atmosphere-ocean-ice-sheet system or instabilities of the ocean circulation, of the ice-sheets, or of the atmosphere-ocean-ice-sheet system. Here, this last hypothesis is examined through the use of the climate model of intermediate complexity CLIMBER2.3, coupled to a very simple ice-sheet model of the Fennoscandian ice-sheet. To cite this article: M. Kageyama, D. Paillard, C. R. Geoscience 337 (2005).