Journal
CLIMATIC CHANGE
Volume 100, Issue 3-4, Pages 733-756Publisher
SPRINGER
DOI: 10.1007/s10584-009-9689-9
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Funding
- National Ice Core Laboratory (NICL)
- NSF [ATM-9905241]
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Future Greenland temperature evolution will affect melting of the ice sheet and associated global sea-level change. Therefore, understanding Greenland temperature variability and its relation to global trends is critical. Here, we reconstruct the last 1,000 years of central Greenland surface temperature from isotopes of N-2 and Ar in air bubbles in an ice core. This technique provides constraints on decadal to centennial temperature fluctuations. We found that northern hemisphere temperature and Greenland temperature changed synchronously at periods of similar to 20 years and 40-100 years. This quasi-periodic multi-decadal temperature fluctuation persisted throughout the last millennium, and is likely to continue into the future.
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