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Evidence for a widespread climatic anomaly at around 9.2 ka before present.

Fleitmann, D., Mudelsee, M., Burns, S. J., Bradley, R. S., Kramers, J. and Matter, A. (2008) Evidence for a widespread climatic anomaly at around 9.2 ka before present. Paleoceanography, 23 (1). ISSN 1944-9186

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To link to this item DOI: 10.1029/2007PA001519

Abstract/Summary

The 8.2 ka event was triggered by a meltwater pulse (MWP) into the North Atlantic and resultant reduction of the thermohaline circulation (THC). This event was preceded by a series of at least 14 MWPs; their impact on early Holocene climate has remained almost unknown. A set of high-quality paleoclimate records from across the Northern Hemisphere shows evidence for a widespread and significant climatic anomaly at ∼9.2 ka B.P. This event has climatic anomaly patterns very similar to the 8.2 ka B.P. event, cooling occurred at high latitudes and midlatitudes and drying took place in the northern tropics, and is concurrent with an MWP of considerable volume (∼8100 km3). As the 9.2 ka MWP occurs at a time of enhanced baseline freshwater flow into the North Atlantic, this MWP may have been, despite its relatively small volume, sufficient to weaken THC and to induce the observed climate anomaly pattern.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Archaeology, Geography and Environmental Science > Scientific Archaeology
Faculty of Science > School of Archaeology, Geography and Environmental Science > Department of Archaeology
ID Code:30509
Publisher:Wiley for American Geophysical Union

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