Centennial-Scale Holocene Climate Variability Revealed by a High-Resolution Speleothem δ 18 O Record from SW Ireland
Evaluating the significance of Holocene submillennial δ 18 O variability in the Greenland ice cores is crucial for understanding how natural climate oscillations may modulate future anthropogenic warming. A high-resolution oxygen isotope record from a speleothem in southwestern Ireland provides evid...
Published in: | Science |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2001
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Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.1063678 https://www.science.org/doi/pdf/10.1126/science.1063678 |
Summary: | Evaluating the significance of Holocene submillennial δ 18 O variability in the Greenland ice cores is crucial for understanding how natural climate oscillations may modulate future anthropogenic warming. A high-resolution oxygen isotope record from a speleothem in southwestern Ireland provides evidence for centennial-scale δ 18 O variations that correlate with subtle δ 18 O changes in the Greenland ice cores, indicating regionally coherent variability in the early Holocene. Evidence for previously undetected early Holocene cooling events is presented, but mid- to late-Holocene ice rafting in the North Atlantic appears to have had little impact on δ 18 O at this ocean margin site. |
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