Format:
12
ISSN:
0277-3791
Content:
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.
Note:
Gesehen am 08.12.2020
In:
Quaternary science reviews, Amsterdam [u.a.] : Elsevier, 1982, 247(2020) Artikel-Nummer 106550, 12 Seiten, 0277-3791
In:
volume:247
In:
year:2020
In:
extent:12
Language:
English
DOI:
10.1016/j.quascirev.2020.106550
URL:
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