Volume 38, Issue 15 p. 5766-5776
RESEARCH ARTICLE

Inter-annual and multi-decadal variability of monsoon season rainfall in central Thailand during the period 1804–1999, as inferred from tree ring oxygen isotopes

Chenxi Xu

Chenxi Xu

Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China

CAS Center for Excellence in Life and Paleoenvironment, Beijing, China

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Nathsuda Pumijumnong

Corresponding Author

Nathsuda Pumijumnong

Faculty of Environment & Resource Studies, Mahidol University, Nakhon Pathom, Thailand

Correspondence

Nathsuda Pumijumnong, Faculty of Environment & Resource Studies, Mahidol University, Nakhon Pathom 73170, Thailand.

Email: [email protected]

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Takeshi Nakatsuka

Takeshi Nakatsuka

Research Institute for Humanity and Nature, Kyoto, Japan

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Masaki Sano

Masaki Sano

Research Institute for Humanity and Nature, Kyoto, Japan

Faculty of Human Sciences, Waseda University, Tokorozawa, Japan

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Zhengtang Guo

Zhengtang Guo

Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China

CAS Center for Excellence in Life and Paleoenvironment, Beijing, China

University of Chinese Academy of Sciences, Beijing, China

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First published: 24 September 2018
Citations: 16
Funding information National Natural Science Foundation of China, Grant/Award Number: 41672179; the Strategic Priority Research Program of Chinese Academy of Sciences, Grant/Award Number: XDB26020000; the Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program, the National Key R&D Program of China, Grant/Award Number: 2016YFA0600502; Ministry of Science and Technology of China, Grant/Award Number: 2017YFE0112800; Research Institute of Humanity and Nature, Kyoto, Japan; Japan Society for the Promotion of Science Fellows, Grant/Award Number: 23242047 and 23-10262; Asian summer monsoon variability during the Holocene: a synthesis study on stalagmites and tree rings from Thailand and China by the Thailand Research Fund (TRF), Grant/Award Number: RDG5930014

Abstract

Long-term records of precipitation in Thailand are necessary to evaluate the robustness of the relationship between El Niño–Southern Oscillation (ENSO) and rainfall. This study presents a tree ring-cellulose oxygen isotope (δ18O) record, based on Pinus merkusii, for the period 1804–1999 in Thailand. Response and spatial correlation analyses reveal that tree ring δ18O is significantly correlated with regional monsoon season (May–October) precipitation. Tree ring δ18O, which explains 50.1% of the variability in regional precipitation, was employed to reconstruct monsoon season rainfall back to 1804. Relatively wet periods occurred in 1809–1821, 1876–1882, 1897–1908, and 1944–1975, while the periods 1825–1850, 1913–1925, and 1979–1997 were relatively dry. During the periods 1854–1930 and 1970–1999, inter-annual variability of precipitation was modulated by the ENSO. In contrast, the absence of this relationship between 1930 and 1970 might relate to the reduced variance of ENSO.