A 338-year tree-ring oxygen isotope record from Thai teak captures the variations in the Asian summer monsoon system.

ABSTRACT: A 338-year oxygen isotope record from teak tree-ring cellulose collected from Mae Hong Son province in northwestern Thailand was presented. The tree-ring series preserves the isotopic signal of the regional wet season rainfall and relative humidity. Tree-ring δ¹⁸O correlates strongly with regional rainfall from May to October, showing coherent variations over large areas in Southeast Asia. We reconstructed the summer monsoon season (May to October) rainfall based on a linear regression model that explained 35.2% of the actual rainfall variance. Additionally, we found that in the 19^th century, there was a remarkable drought during many years that corresponded to regional historic drought events. The signals of the June to September Indian summer monsoon (ISM) for the p

SUBMITTER: Pumijumnong N 

PROVIDER: S-EPMC7265473 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature