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| Titel |
North Atlantic Oscillation records in Siberian tree rings |
| VerfasserIn |
Olga Sidorova, Matthias Saurer, Rolf Siegwolf |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250035451
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| Zusammenfassung |
| Changes in the Eurasian subarctic like temperature increase, thawing of permafrost, changes
in seasonality (shifting of the beginning of the growth period), and changes in the amount of
precipitations are linked to a positive phase of North Atlantic Oscillation (NAO) in recent
decades.
We report about the response of larch trees to climatic changes in the eastern Taimyr (Central
Siberia) and northeastern Yakutia (Eastern Siberia) at high latitudes during the last century
using tree ring width, latewood density and stable isotope wood and cellulose (δ13C, δ18O)
chronologies.
Not only the summer months were related to the carbon and oxygen isotope variations. The
positive relationship, which was found between February temperature and δ18O of cellulose
for northeastern Yakutia and the negative correlations between the temperature of February
and δ13C of wood and cellulose for eastern Taimyr, could be explained by the influence of
North Atlantic Oscillation.
This work was supported by Swiss National Science Foundation SNF 200021_121838/1 and
RFBR_sibir 09-05-98015. |
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