Stable carbon isotopes of Planulina wuellerstorfi of sediment core MD01-2444 ...
The observation that Greenland and Antarctic temperatures have followed a specific 'asymmetrical' pattern on millennial time-scales sets rigid constraints on any viable theory of abrupt climate change. The further observation that the very same asymmetry is also reflected in planktonic and...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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PANGAEA
2007
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.849505 https://doi.pangaea.de/10.1594/PANGAEA.849505 |
| Summary: | The observation that Greenland and Antarctic temperatures have followed a specific 'asymmetrical' pattern on millennial time-scales sets rigid constraints on any viable theory of abrupt climate change. The further observation that the very same asymmetry is also reflected in planktonic and benthic d18O measurements from the Northeast Atlantic has extended this constraint to include a specific response in the ocean. Here we present records of deep-water temperature, d18O and d13C variability from the Northeast Atlantic that help to shed light on the links between overturning circulation perturbations, sea-level variability and inter-hemispheric climate change on millennial time-scales. Results indicate that while deep-water temperatures in the Northeast Atlantic have tracked Greenland climate, the d18O signature of local deepwater (d18Odw) has varied in a manner more reminiscent of Antarctic temperature variability. The previously identified correspondence of Antarctic warm events with benthic d18O minima in ... : Supplement to: Skinner, Luke C; Elderfield, Henry; Hall, Michael A (2007): Phasing of Millennial Climate Events and Northeast Atlantic Deep-Water Temperature Change Since 50 Ka Bp. In: Schmittner, A; Chiang, JCH; Hemming, SR (eds.), Ocean Circulation: Mechanisms and Impacts-Past and Future Changes of Meridional Overturning, Geophysical Monograph Series, 173, 197-208 ... |
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