Deep-water circulation changes lead North Atlantic climate during deglaciation
| Autor: | Nicholas L. Balascio, Thomas E. Woodruff, Kees C. Welten, Trond Dokken, Francesco Muschitiello, William J. D'Andrea, Luke C Skinner, Nicole deRoberts, M.H. Simon, Marc W. Caffee, Timothy J Heaton, Andreas Schmittner |
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| Přispěvatelé: | Caffee, Marc W [0000-0002-6846-8967], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
sub-01 Science General Physics and Astronomy Climate change 02 engineering and technology General Biochemistry Genetics and Molecular Biology Article 03 medical and health sciences Ice core Deglaciation 14. Life underwater Stadial Younger Dryas 0405 Oceanography Predictability lcsh:Science skin and connective tissue diseases Multidisciplinary Lead (sea ice) North Atlantic Deep Water General Chemistry 021001 nanoscience & nanotechnology 030104 developmental biology Oceanography 0403 Geology 13. Climate action lcsh:Q sense organs 0210 nano-technology 0406 Physical Geography and Environmental Geoscience Geology |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Constraining the response time of the climate system to changes in North Atlantic Deep Water (NADW) formation is fundamental to improving climate and Atlantic Meridional Overturning Circulation predictability. Here we report a new synchronization of terrestrial, marine, and ice-core records, which allows the first quantitative determination of the response time of North Atlantic climate to changes in high-latitude NADW formation rate during the last deglaciation. Using a continuous record of deep water ventilation from the Nordic Seas, we identify a ∼400-year lead of changes in high-latitude NADW formation ahead of abrupt climate changes recorded in Greenland ice cores at the onset and end of the Younger Dryas stadial, which likely occurred in response to gradual changes in temperature- and wind-driven freshwater transport. We suggest that variations in Nordic Seas deep-water circulation are precursors to abrupt climate changes and that future model studies should address this phasing. The response time of North Atlantic climate to changes in high-latitude deep-water formation during the last deglaciation is still unclear. Here the authors show that gradual changes in Nordic Seas deep-water circulation systematically lead ahead of abrupt regional climate shifts by ~400 years. |
| Databáze: | OpenAIRE |
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