Article

 

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

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/x346d922b

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:  http://www.sciencemag.org/journals/

Descriptions

Attribute NameValues
Creator
Abstract
  • 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
DOI
Date Available
Date Issued
Citation
  • 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
Journal Title
Series
Rights Statement
Funding Statement (additional comments about funding)
  • We acknowledge funding through NSF grant 08-06377 (J.P.S.), the NOAA Climate & Global Change fellowship program, administered by the University Corporation for Atmospheric Research (C.B.), and the US NSF P2C2 program (A.C., Z.L., F.H. and B. O.-B.). This research used resources of the Oak Ridge Leadership Computing Facility, located in the National Center for Computational Sciences at Oak Ridge National Laboratory, which is supported by the Office of Science of the Department of Energy under contract DE-AC05-00OR22725. NEEM is directed and organized by the Center of Ice and Climate at the Niels Bohr Institute and US NSF, Office of Polar Programs. It is supported by funding agencies and institutions in Belgium (FNRS-CFB and FWO), Canada (NRCan/GSC), China (CAS), Denmark (FIST), France (IPEV, CNRS/INSU, CEA and ANR), Germany (AWI), Iceland (RannIs), Japan (NIPR), Korea (KOPRI), The Netherlands (NWO/ALW), Sweden (VR), Switzerland (SNF), United Kingdom (NERC) and the USA (US NSF, Office of Polar Programs). NEEM data and temperature reconstructions are provided as supplementary data files.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items