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Tree-ring based February–April relative humidity reconstruction since A.D. 1695 in the Gaoligong Mountains, southeastern Tibetan Plateau

Tree-ring based February–April relative humidity reconstruction since A.D. 1695 in the Gaoligong... High-resolution proxy data are limited in the southeastern Tibetan Plateau, which inhibits our understanding of long-term climate variability in historical periods. In this study, we developed one tree-ring-width chronology of Tsuga dumosa (D. Don Eichler) in the Gaoligong Mountains, southeastern Tibetan Plateau. Tree-ring-width chronology showed negative correlations with monthly temperatures in most months, especially for current year, whereas correlations with precipitation and relative humidity were mostly positive. Significant positive correlations were found between tree rings and relative humidity in February, April and June of current year and May of previous year. February–April relative humidity was reconstructed for the past 321 years (A.D. 1695–2016) in the Gaoligong Mountains, which explained 26% of the actual variance during the calibration period 1962–2004. In this reconstruction, dry periods occurred in 1808–1820, 1831–1842, 1914–1921, 1958–1964 and 1980–1988. Wet periods were found in 1700–1727, 1821–1830, 1843–1859, 1944–1957 and 1965–1979. The dry and wet episodes of our relative humidity reconstruction match well other studies in the nearby regions, which demonstrate that the new record is reliable and captures large-scale climate signals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Geographer Taylor & Francis

Tree-ring based February–April relative humidity reconstruction since A.D. 1695 in the Gaoligong Mountains, southeastern Tibetan Plateau

Jiang, Yu-mei; Li, Zong-Shan; Fan, Ze-Xin
Asian Geographer , Volume 34 (1): 12 – Jan 2, 2017
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Tree-ring based February–April relative humidity reconstruction since A.D. 1695 in the Gaoligong Mountains, southeastern Tibetan Plateau

Abstract

High-resolution proxy data are limited in the southeastern Tibetan Plateau, which inhibits our understanding of long-term climate variability in historical periods. In this study, we developed one tree-ring-width chronology of Tsuga dumosa (D. Don Eichler) in the Gaoligong Mountains, southeastern Tibetan Plateau. Tree-ring-width chronology showed negative correlations with monthly temperatures in most months, especially for current year, whereas correlations with precipitation and relative...
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Publisher
Taylor & Francis
Copyright
© 2017 Hong Kong Geographical Association
ISSN
2158-1762
eISSN
1022-5706
DOI
10.1080/10225706.2017.1325758
Publisher site
See Article on Publisher Site

Abstract

High-resolution proxy data are limited in the southeastern Tibetan Plateau, which inhibits our understanding of long-term climate variability in historical periods. In this study, we developed one tree-ring-width chronology of Tsuga dumosa (D. Don Eichler) in the Gaoligong Mountains, southeastern Tibetan Plateau. Tree-ring-width chronology showed negative correlations with monthly temperatures in most months, especially for current year, whereas correlations with precipitation and relative humidity were mostly positive. Significant positive correlations were found between tree rings and relative humidity in February, April and June of current year and May of previous year. February–April relative humidity was reconstructed for the past 321 years (A.D. 1695–2016) in the Gaoligong Mountains, which explained 26% of the actual variance during the calibration period 1962–2004. In this reconstruction, dry periods occurred in 1808–1820, 1831–1842, 1914–1921, 1958–1964 and 1980–1988. Wet periods were found in 1700–1727, 1821–1830, 1843–1859, 1944–1957 and 1965–1979. The dry and wet episodes of our relative humidity reconstruction match well other studies in the nearby regions, which demonstrate that the new record is reliable and captures large-scale climate signals.

Journal

Asian Geographer – Taylor & Francis

Published: Jan 2, 2017

Keywords: Gaoligong Mountains; Tsuga dumosa; tree-ring width; climate response; relative humidity

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