Summer temperature variations in southern Kamchatka as reconstructed from a 247-year tree-ring chronology of Betula ermanii

Masaki Sano, Fumito Furuta, Tatsuo Sweda

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We have developed a 247-year ring-width chronology of Betura ermanii Cham. growing in an open canopy forest close to the tree line at a coastal site in southern Kamchatka. Climatic response analyses revealed that the ring width was primarily controlled by July-August temperature. The regression models that we used for statistical reconstruction passed the stringent calibration-verification tests used in dendroclimatology, resulting in the first quality-controlled tree-ring reconstruction for southern Kamchatka. The reconstructed temperature shows a cool period from the 1830s to the 1880s, followed by gradual warming until ca. 1940, then a cooling trend extending to the 1970s, and finally a warming trend continuing to the present. Spatial correlation analyses with sea surface temperature in the North Pacific indicated that the seas surrounding the Kamchatka peninsula play a role in modulating temperature variations in the study area whereas the effects of the Pacific Decadal Oscillation are relatively weak.

Original languageEnglish
Pages (from-to)234-240
Number of pages7
JournalJournal of Forest Research
Volume15
Issue number4
DOIs
Publication statusPublished - 2010
Externally publishedYes

Fingerprint

Betula ermanii
growth rings
tree ring
chronology
summer
dendroclimatology
warming
temperature
Pacific Decadal Oscillation
treeline
forest canopy
surface temperature
oscillation
calibration
sea surface temperature
cooling
testing
trend

Keywords

  • Climate reconstruction
  • Dendrochronology
  • Pacific Decadal Oscillation
  • Sea surface temperature

ASJC Scopus subject areas

  • Forestry

Cite this

Summer temperature variations in southern Kamchatka as reconstructed from a 247-year tree-ring chronology of Betula ermanii. / Sano, Masaki; Furuta, Fumito; Sweda, Tatsuo.

In: Journal of Forest Research, Vol. 15, No. 4, 2010, p. 234-240.

Research output: Contribution to journalArticle

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