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A record of tree-ring density and reconstruction of April–September temperatures in south-west Norway
Stockholm University, Faculty of Science, Department of Physical Geography. Stockholm University, Faculty of Science, The Bolin Centre for Climate Research (together with KTH & SMHI).ORCID iD: 0000-0002-5262-1883
Number of Authors: 32026 (English)In: Geografiska Annaler. Series A, Physical Geography, ISSN 0435-3676, E-ISSN 1468-0459Article in journal (Refereed) Epub ahead of print
Abstract [en]

Adding to the existing network of tree-ring chronologies in Scandinavia, Scots pine (Pinus sylvestris L.) trees at ∼750 m a.s.l. in western Norway were used to derive a record, AD 1252–2008, of maximum latewood density by X-ray densitometry. Based on significant correlation to mean April-September temperature, a reconstruction explaining 56% of the variability over the AD 1900–2008 calibration period was made for southern Norway, with correlations >0.7 for the westernmost regions. A drop in inter-series correlation and replication in the early fifteenth century suggests that the reconstruction is most robust from ca AD 1450 onward. On decadal timescales, the warmest reconstructed temperatures are in the last half of the twentieth to the twenty-first centuries and cool periods were reconstructed in the mid-to-late fifteenth century, in the early seventeenth century, in the late seventeenth and early eighteenth centuries, in the late eighteenth century and in the mid-nineteenth century. When comparing to tree-ring widths from the same site, diverging centennial trends are indicated by ensemble empirical mode decomposition analysis. More samples are needed to investigate this more closely. Annual to multidecadal scale agreement with other tree-ring density temperature reconstructions in Fennoscandia, especially those from central Sweden, indicates that the reconstruction is a reasonable representation of regional temperature variability in large parts of southern Norway.

Place, publisher, year, edition, pages
2026.
Keywords [en]
Maximum latewood density, Scots pine, temperature reconstruction, tree rings, western Norway
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:su:diva-257015DOI: 10.1080/04353676.2026.2676465Scopus ID: 2-s2.0-105040268299OAI: oai:DiVA.org:su-257015DiVA, id: diva2:2075249
Available from: 2026-06-18 Created: 2026-06-18 Last updated: 2026-06-18

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Gunnarson, Björn E.

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Department of Physical GeographyThe Bolin Centre for Climate Research (together with KTH & SMHI)
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CiteExportLink to record
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  • apa
  • ieee
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  • de-DE
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Output format
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  • asciidoc
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