Greenland Temperature Response to Climate Forcing during the Last Deglaciation Public Deposited

This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in the journal Science on 05 September 2014, Volume 345 number 6201, DOI:10.1126/science.1254961. The published article is copyrighted by the American Association for the Advancement of Science and can be found at:


Attribute NameValues
Abstract or Summary
  • Greenland ice core water isotopic composition (δ¹⁸O) provides detailed evidence for abrupt climate changes, but is by itself insufficient for quantitative reconstruction of past temperatures and their spatial patterns. We investigate Greenland temperature evolution during the last deglaciation using independent reconstructions from three ice cores and simulations with a coupled ocean-atmosphere climate model. Contrary to the traditional δ¹⁸O interpretation, the Younger Dryas period was 4.5±2°C warmer than the Oldest Dryas, due to increased CO₂ forcing and summer insolation. The magnitude of abrupt temperature changes is larger in central Greenland (9-14°C) than in the northwest (5-9°C), fingerprinting a North-Atlantic origin. Simulated changes in temperature seasonality closely track changes in the Atlantic overturning strength, and support the hypothesis that abrupt climate change is mostly a winter phenomenon.
Resource Type
Date Available
Date Issued
  • Buizert, C., Gkinis, V., Severinghaus, J. P., He, F., Lecavalier, B. S., Kindler, P., . . . Brook, E. J. (2014). Greenland temperature response to climate forcing during the last deglaciation. Science, 345(6201), 1177-1180. doi:10.1126/science.1254961
Rights Statement
Funding Statement (additional comments about funding)
Peer Reviewed



This work has no parents.

Last modified

Downloadable Content

Download PDF