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Journal Article

Large-scale climate signals of a European oxygen isotope network from tree rings

Authors

Balting,  Daniel F.
External Organizations;

Ionita,  Monica
External Organizations;

Wegmann,  Martin
External Organizations;

/persons/resource/ghelle

Helle,  G.
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Schleser,  Gerhard H.
External Organizations;

Rimbu,  Norel
External Organizations;

Freund,  Mandy B.
External Organizations;

/persons/resource/heinrich

Heinrich,  Ingo
4.3 Climate Dynamics and Landscape Evolution, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Caldarescu,  Diana
External Organizations;

Lohmann,  Gerrit
External Organizations;

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Fulltext (public)

5006657.pdf
(Publisher version), 15MB

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Citation

Balting, D. F., Ionita, M., Wegmann, M., Helle, G., Schleser, G. H., Rimbu, N., Freund, M. B., Heinrich, I., Caldarescu, D., Lohmann, G. (2021): Large-scale climate signals of a European oxygen isotope network from tree rings. - Climate of the Past, 17, 3, 1005-1023.
https://doi.org/10.5194/cp-17-1005-2021


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5006657
Abstract
We investigate the climate signature of δ18O tree-ring records from sites distributed all over Europe covering the last 400 years. An empirical orthogonal function (EOF) analysis reveals two distinct modes of variability on the basis of the existing δ18O tree-ring records. The first mode is associated with anomaly patterns projecting onto the El Niño–Southern Oscillation (ENSO) and reflects a multi-seasonal climatic signal. The ENSO link is pronounced for the last 130 years, but it is found to be weak over the period from 1600 to 1850, suggesting that the relationship between ENSO and the European climate may not be stable over time. The second mode of δ18O variability, which captures a north–south dipole in the European δ18O tree-ring records, is related to a regional summer atmospheric circulation pattern, revealing a pronounced centre over the North Sea. Locally, the δ18O anomalies associated with this mode show the same (opposite) sign with temperature (precipitation). Based on the oxygen isotopic signature derived from tree rings, we argue that the prevailing large-scale atmospheric circulation patterns and the related teleconnections can be analysed beyond instrumental records.