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Advances towards improved low-frequency tree-ring reconstructions, using an updated Pinus sylvestris L. MXD network from the Scandinavian Mountains
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2013 (English)In: Journal of Theoretical and Applied Climatology, ISSN 0177-798X, E-ISSN 1434-4483, Vol. 113, no 3-4, 697-710 p.Article in journal (Refereed) Published
Abstract [en]

The dendrochronological use of the parameter maximum density (MXD) in Pinus Sylvestris L., at high latitudes, has provided valuable insights into past summer temperature variations. Few long MXD chronologies, from climatically coherent regions, exist today, with the exception being in northern Europe. Five, 500-year-long, Fennoscandian, MXD chronologies were compared with regard to their common variability and climate sensitivity. They were used to test Signal-free standardization techniques, to improve inferences of low-frequency temperature variations. Climate analysis showed that, in accordance with previous studies on MXD in Fennoscandia, the summer temperature signal is robust (R (2) > 50 %) and reliable over this climatically coherent region. A combination of Individual standardization and regional curve standardization is recommended to refine long-term variability from these MXD chronologies and relieve problems arising from low replication and standardization end-effects.

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2013. Vol. 113, no 3-4, 697-710 p.
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URN: urn:nbn:se:umu:diva-79600DOI: 10.1007/s00704-012-0787-7ISI: 000322157800023OAI: diva2:700030
Available from: 2014-03-03 Created: 2013-08-26 Last updated: 2014-03-03Bibliographically approved

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Josefsson, Torbjörn
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Department of Ecology and Environmental Sciences
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