Pauly, M, Helle, G, Büntgen, U, Wacker, L, Treydte, K, Reinig, F, Turney, C, Nievergelt, D, Kromer, B, Friedrich, M, Sookdeo, A, Heinrich, I, Riedel, F, Balting, D and Brauer, A (2020) 'An annual-resolution stable isotope record from Swiss subfossil pine trees growing in the Late Glacial.' Quaternary Science Reviews, 247. e106550.
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Abstract
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 – 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 Type: | Article |
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| Keywords: | tree-ring cellulose, δ13C, δ18O, Late Glacial, Switzerland, climate, KEF |
| Divisions: | School of Sciences |
| UoA: | Geography & Environment |
| Date Deposited: | 07 Feb 2020 16:25 |
| Last Modified: | 27 Feb 2024 14:37 |
| ISSN: | 0277-3791 |
| URI / Page ID: | https://researchspace.bathspa.ac.uk/id/eprint/13088 |
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