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Past break-monsoon conditions detectable by high resolution intra-annual δ18O analysis of teak rings

Managave, SR and Sheshshayee, MS and Borgaonkar, HP and Ramesh, R (2010) Past break-monsoon conditions detectable by high resolution intra-annual δ18O analysis of teak rings. Geophysical Research Letters, 37 (5).

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Abstract

Intra-annual variations in the cellulose oxygen isotopic composition (δ18O) of several annual growth rings of three teak (Tectona grandis L.F.) trees from central India show a clear seasonal cycle with higher values in the early and late growing seasons and lower values in the middle. This cycle is useful to identify growth occurring during different phases of the growing season. Relative humidity (RH) appears to control the intra-annual δ18O variations rather than rainfall, and therefore past break-monsoon conditions associated with lower RH, could be detected by high resolution sub-sampling of annual rings for δ18O analysis.

Item Type: Article
Additional Information: Copyright of this article belongs to American Geophysical Union.
Uncontrolled Keywords: Annual growth; Annual ring; Central India; Growing season; High resolution; Monsoon conditions; Oxygen isotopic composition; Relative humidities; Seasonal cycle; Sub-sampling; Tectona grandis, Atmospheric humidity; Humidity control; Oxygen, O rings, annual variation; cellulose; dicotyledon; growing season; oxygen; rainfall; relative humidity; seasonality; tree ring, India, Tectona grandis
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 03 Nov 2014 11:46
Last Modified: 03 Nov 2014 11:46
URI: http://moeseprints.incois.gov.in/id/eprint/812

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