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Long-Term Temperature Trends and Tree Growth in the Taymir Region of Northern Siberia

Published online by Cambridge University Press:  20 January 2017

Gordon C. Jacoby ,
Nikolai V. Lovelius ,
Oleg I. Shumilov ,
Oleg M. Raspopov ,
Juri M. Karbainov  and
David C. Frank
Gordon C. Jacoby
Affiliation:
Lamont-Doherty Earth Observatory, 61 Route 9W, Palisades, New York 10964
Nikolai V. Lovelius
Affiliation:
Botanic Institute of RAS, Butlerova str., 13, app 393, St. Petersburg, 195256 Russia
Oleg I. Shumilov
Affiliation:
High-Latitude Geophysical Lab. of SPbF IZMIRAN, P.O. Box 123, Apatity, Murmansk Region, 184300 Russia
Oleg M. Raspopov
Affiliation:
St. Petersburg Filial Institute of Terrestrial Magnetism, Ionosphere and Radiowaves Propagation (SPbF IZMIRAN), Muhnoy per., 2, St. Petersburg, 191023 Russia
Juri M. Karbainov
Affiliation:
Taymir State Nature Preserve, Aeroportovskaya St., 20a, KW1, Khatanga 663260, Krasnoyarsk Region, Russia
David C. Frank
Affiliation:
Lamont-Doherty Earth Observatory, 61 Route 9W, Palisades, New York 10964
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Abstract

The northernmost conifers in the world are located well above the Arctic Circle in the Taymir region of northern Siberia and have been recording the thermal environment for centuries to millennia. The trees respond to temperatures beyond the narrow season of actual cambial cell division by means of root growth, photosynthesis, lignification of cell walls, and other biochemical processes. Data from annual tree-ring widths are used to reconstruct May–September mean temperatures for the past four centuries. These warm-season temperatures correlate with annual temperatures and indicate unusual warming in the 20th century. However, there is a loss of thermal response in ring widths since about 1970. Previously the warmer temperatures induced wider rings. Most major warming and cooling trends are in agreement with other high-latitude temperature reconstructions based on tree-ring analyses with some regional differences in timing of cooling in the late 18th century and of warming in the late 19th century.

Keywords

tree ringstemperatureArcticpaleoclimateSiberia

Information

Type
Research Article
Information
Quaternary Research , Volume 53 , Issue 3 , May 2000 , pp. 312 - 318
Copyright
University of Washington

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