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Trends in recent temperature and radial tree growth spanning 2000 years across northwest Eurasia.
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2008 (English)In: Philos Trans R Soc Lond B Biol Sci, Vol. 363, p. 2271-2284Article in journal (Refereed) Published
Abstract [en]

This paper describes variability in trends of annual tree growth at several locations in the high latitudes of Eurasia, providing a wide regional comparison over a 2000-year period. The study focuses on the nature of local and widespread tree-growth responses to recent warming seen in instrumental observations, available in northern regions for periods ranging from decades to a century. Instrumental temperature data demonstrate differences in seasonal scale of Eurasian warming and the complexity and spatial diversity of tree-growing-season trends in recent decades. A set of long tree-ring chronologies provides empirical evidence of association between inter-annual tree growth and local, primarily summer, temperature variability at each location. These data show no evidence of a recent breakdown in this association as has been found at other high-latitude Northern Hemisphere locations. Using Kendall's concordance, we quantify the time-dependent relationship between growth trends of the long chronologies as a group. This provides strong evidence that the extent of recent widespread warming across northwest Eurasia, with respect to 100- to 200-year trends, is unprecedented in the last 2000 years. An equivalent analysis of simulated temperatures using the HadCM3 model fails to show a similar increase in concordance expected as a consequence of anthropogenic forcing.

Place, publisher, year, edition, pages
2008. Vol. 363, p. 2271-2284
Keywords [en]
climate change, Eurasia, tree-ring chronology, temperature
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-7966DOI: 10.1098/rstb.2007.2199OAI: oai:DiVA.org:polar-7966DiVA, id: diva2:1284364
Conference
2009-01-30T14:12:00.000+01:00
Note

article; 2011-01-10T21:40:12.715+01:00

Available from: 2019-01-31 Created: 2019-01-31 Last updated: 2019-01-31Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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