TY - JOUR
T1 - Summer temperature variations in southern Kamchatka as reconstructed from a 247-year tree-ring chronology of Betula ermanii
AU - Sano, Masaki
AU - Furuta, Fumito
AU - Sweda, Tatsuo
N1 - Funding Information:
Acknowledgments We thank Y. D. Muravyev for his assistance in our sample collection, M. Yamano and T. Nagao for inviting us to this study as part of their paleoclimate reconstruction project primarily based on inversion of borehole temperature profiles, and two anonymous reviewers for valuable comments and suggestions. This study was funded by the 2000–2002 Grant-in-Aid for Overseas Scientific Research (B) 12573015 from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Climate reconstruction
KW - Dendrochronology
KW - Pacific Decadal Oscillation
KW - Sea surface temperature
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U2 - 10.1007/s10310-010-0183-z
DO - 10.1007/s10310-010-0183-z
M3 - Article
AN - SCOPUS:77955087439
VL - 15
SP - 234
EP - 240
JO - Journal of Forest Research
JF - Journal of Forest Research
SN - 1341-6979
IS - 4
ER -