A dendrochronological network-based approach to reconstructing temperature variability in south-east Australia

The growth of the Australian mainland’s only alpine conifer is highly sensitive to variation in growing season temperatures. However, this sensitivity is limited by site-level non-climatic stimuli that contaminate climate-specific signals embedded within tree-ring width series. These site-level factors may be overcome by integrating data from samples collected from sites throughout the Australian Alps to generate a single tree-ring chronology. Elsewhere, similar chronologies have proven to be powerful source of regional climatic data. This project will involve the development of a single ‘principle-component’ chronology from multiple tree-ring width chronologies from sites in the ACT, NSW and Victoria. The project will also test the sensitivity of this principle-component chronology to regional temperature data.

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