New research
Causes of abrupt climate change
What caused abrupt climate swings known as the Dansgaard-Oeschger events of the last ice age?
The Northern Seas. Purple arrows represent surface currents, dashed orange arrows deep currents, and SPG the subpolar gyre. Shading shows annual mean sea surface temperature and sea ice concentration.
Photo:
Camille Li and Anders Born
Main content
Published: 18.01.2019
In this聽,聽we speculate聽that the subpolar North Atlantic hit a sweet spot, possible in a glacial world but not today, where positive feedbacks between winds, sea ice and ocean circulation created large, sustained climate oscillations.
Reference
Camille Li, Andreas Born: Coupled atmosphere-ice-ocean dynamics in Dansgaard-Oeschger events,Quaternary Science Reviews, Volume 203, 2019,Pages 1-20,ISSN 0277-3791, .
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