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| Titel |
Improved understanding of Holocene climate change from stable-isotopic analysis of Sphagnum alpha-cellulose in raised peat bogs |
| VerfasserIn |
Tim Daley, Keith Barber, Neil Loader, F. Alayne Street-Perrott |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250057180
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| Zusammenfassung |
| The stable isotopic composition of Sphagnum alpha-cellulose in raised peat bogs is directly
related to the isotopic composition of the precipitation from which it is derived. The isotopic
composition of precipitation in any given place over decadal timescales is related to regional
climate and the prevailing atmospheric circulation regimes. Mass-spectrometric analyses of
sub-fossil Sphagnum remains preserved in raised peat bogs provide a quantitative estimate of
variations in the source water used for cellulose synthesis. Here we review the contribution
from stable isotopic data in the improved, quantitative understanding of Holocene
climate change from raised peat bogs alongside established multi-proxy palaeoclimate
investigations using data from sites in north-western Europe. The data reveal evidence for
coherent climate changes across the region both in duration and magnitude which yield
new insight into the potential mechanisms for late Holocene climate variations. |
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