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Northern European summer temperature variations over the Common Era from integrated tree-ring density records
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för naturgeografi och kvartärgeologi (INK).
Vise andre og tillknytning
2014 (engelsk)Inngår i: Journal of Quaternary Science, ISSN 0267-8179, E-ISSN 1099-1417, Vol. 29, nr 5, s. 487-494Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Tree-ring chronologies of maximum latewood density are most suitable to reconstruct annually resolved summer temperature variations of the late Holocene. The two longest such chronologies have been developed in northern Europe stretching back to the 2nd century BC, and the 5th century AD. We show where similarities between the two chronologies exist, and combine portions of both into a new summer temperature reconstruction for the Common Era. To minimize the transfer of potential biases, we assess the contribution of the candidate reconstructions' measurements, and exclude data (i) from exceptionally young and old trees, and (ii) produced by different laboratory technologies. Our new composite reconstruction reveals warmer conditions during Roman, Medieval and recent times, separated by prolonged cooling during the Migration period and Little Ice Age. Twentieth century warmth, as indicated in one of the existing density records, is reduced in the new reconstruction, also affecting the overall, millennial-scale, cooling trend over the late Holocene (-0.30 degrees C per 1000 years). Due to the reduced biological memory, typical for tree-ring density measurements, the new reconstruction is most suitable for evaluating the rate and speed of abrupt summer cooling following large volcanic eruptions.

sted, utgiver, år, opplag, sider
2014. Vol. 29, nr 5, s. 487-494
Emneord [en]
dendrochronology, Finland, late Holocene, Sweden, temperature reconstruction
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-107636DOI: 10.1002/jqs.2726ISI: 000340596900010OAI: oai:DiVA.org:su-107636DiVA, id: diva2:748929
Merknad

AuthorCount:5;

Tilgjengelig fra: 2014-09-22 Laget: 2014-09-22 Sist oppdatert: 2022-02-23bibliografisk kontrollert

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Krusic, Paul J.

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