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Tree Ring Effects and Ice Core Acidities Clarify the Volcanic Record of the 1St Millennium : Volume 10, Issue 2 (15/04/2014)

By Baillie, M. G. L.

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Book Id: WPLBN0004006676
Format Type: PDF Article :
File Size: Pages 22
Reproduction Date: 2015

Title: Tree Ring Effects and Ice Core Acidities Clarify the Volcanic Record of the 1St Millennium : Volume 10, Issue 2 (15/04/2014)  
Author: Baillie, M. G. L.
Volume: Vol. 10, Issue 2
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Mcaneney, J., & L. Bailli, M. G. (2014). Tree Ring Effects and Ice Core Acidities Clarify the Volcanic Record of the 1St Millennium : Volume 10, Issue 2 (15/04/2014). Retrieved from

Description: School of Geography, Archaeology and Palaeoecology, Elmwood Avenue, Queen's University, Belfast, Belfast BT7 1NN, Northern Ireland, UK. Various attempts have been made to link tree-ring and ice-core records, something vital for the understanding of the environmental response to major volcanic eruptions in the past. Here we demonstrate that, by taking note of the spacing between events, it is possible to clarify linkages between tree-response, as witnessed by frost rings in bristlecone pines from Western North America and volcanic acid deposition in ice cores. The results demonstrate that in the 6th and 7th centuries of the current era, and presumably for all earlier dates, the key European ice chronologies from the North Greenland Ice Core Project, namely Dye3, GRIP, NGRIP and NEEM appear to have been wrongly dated by 7 years, with the ice dates being too old. Similar offsets are observed for the Antarctic Law Dome and West Antarctic Ice Sheet Divide WDC06A ice-core chronologies that have been linked to the Greenland record. Importantly, the results clarify which frost rings in bristlecone pines are related to volcanic activity and which may be the result of other causes. In addition, it is possible to show that ice core researchers have used inappropriate linkages to tree effects to justify their chronology.

Tree ring effects and ice core acidities clarify the volcanic record of the 1st millennium

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