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An annual-resolution stable isotope record from Swiss subfossil pine trees growing in the late Glacial

Previous studies have suggested that the Late Glacial period (LG; ∼14 600-11 700 cal BP) was characterised by abrupt and extreme climate variability over the European sector of the North Atlantic. The limited number of precisely dated, high-resolution proxy records, however, restricts our understand...

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Main Authors: Pauly, Maren (Author) , Helle, Gerhard (Author) , Büntgen, Ulf (Author) , Wacker, Lukas (Author) , Treydte, Kerstin (Author) , Reinig, Frederick (Author) , Turney, Chris (Author) , Nievergelt, Daniel (Author) , Kromer, Bernd (Author) , Friedrich, Michael (Author) , Sookdeo, Adam (Author) , Heinrich, Ingo (Author) , Riedel, Frank (Author) , Balting, Daniel (Author) , Brauer, Achim (Author)
Format: Article (Journal)
Language:English
Published: 15 September 2020
In: Quaternary science reviews
Year: 2020, Volume: 247
ISSN:0277-3791
DOI:10.1016/j.quascirev.2020.106550
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.quascirev.2020.106550
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0277379120305126
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Author Notes:Maren Pauly, Gerhard Helle, Ulf Büntgen, Lukas Wacker, Kerstin Treydte, Frederick Reinig, Chris Turney, Daniel Nievergelt, Bernd Kromer, Michael Friedrich, Adam Sookdeo, Ingo Heinrich, Frank Riedel, Daniel Balting, Achim Brauer
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Summary:Previous studies have suggested that the Late Glacial period (LG; ∼14 600-11 700 cal BP) was characterised by abrupt and extreme climate variability over the European sector of the North Atlantic. The limited number of precisely dated, high-resolution proxy records, however, restricts our understanding of climate dynamics through the LG. Here, we present the first annually-resolved tree-cellulose stable oxygen and carbon isotope chronology (δ18Otree, δ13Ctree) covering the LG between ∼14 050 and 12 795 cal BP, generated from a Swiss pine trees (P. sylvestris; 27 trees, 1255 years). Comparisons of δ18Otree with regional lake and ice core δ18O records reveal that LG climatic changes over the North Atlantic (as recorded by Greenland Stadials and Inter-Stadials) were not all experienced to the same degree in the Swiss trees. Possible explanations include: (1) LG climate oscillations may be less extreme during the summer in Switzerland, (2) tree-ring δ18O may capture local precipitation and humidity changes and/or (3) decayed cellulose and various micro-site conditions may overprint large-scale temperature trends found in other δ18O records. Despite these challenges, our study emphasises the potential to investigate hydroclimate conditions using subfossil pine stable isotopes.
Item Description:Gesehen am 08.12.2020
Physical Description:Online Resource
ISSN:0277-3791
DOI:10.1016/j.quascirev.2020.106550

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