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Tree-ring reconstructions of cool season temperature for far southeastern Australia, 1731-2007

Citation

Allen, KJ and Anchukaitis, KJ and Grose, MG and Lee, G and Cook, ER and Risbey, JS and O'Kane, TJ and Monselesan, D and O'Grady, A and Larsen, S and Baker, PJ, Tree-ring reconstructions of cool season temperature for far southeastern Australia, 1731-2007, Climate Dynamics, 53, (1-2) pp. 569-583. ISSN 0930-7575 (2019) [Refereed Article]

Copyright Statement

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

DOI: doi:10.1007/s00382-018-04602-2

Abstract

At the global scale, reconstructions of cool season temperature over past centuries are relatively rare. Here we present 277-year reconstructions of cool season (July–October) temperatures for southern Australia based on three different data sets: a spatial field reconstruction based on highly resolved temperature data from the Australian Water Availability Product data; reconstructions for the four southeast Australian states based on the Berkeley Earth mean temperature data for each state; and reconstructions for individual stations in southeastern Australia from the Australian Bureau of Meteorology’s Australian Climate Observations Reference Network–Surface Air Temperature data. Our reconstructions typically capture 25–50% of the variation over the late twentieth Century calibration period and are strongest for the southern state of Tasmania and the southeastern part of mainland Australia. All three use Tasmanian tree-rings sensitive to cool season temperatures and display similar variability. In the context of our reconstructions, the persistent warming in the observed record since ~ 1950 is unprecedented. While the low frequency variability of winter temperatures is generally in step with that in summer (December–February) temperatures, high frequency variability is not, illustrating the need for seasonal reconstructions to help improve understanding of variability in inter-seasonal dynamics and the historical importance of this on the environment. The reconstructions covary with changes in the Southern Annular Mode and may be useful for future reconstructions of this phenomenon.

Item Details

Item Type:Refereed Article
Keywords:cool season temperature reconstruction, Australia, tree rings
Research Division:Environmental Sciences
Research Group:Climate change impacts and adaptation
Research Field:Ecological impacts of climate change and ecological adaptation
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Effects of climate change on Australia (excl. social impacts)
UTAS Author:Allen, KJ (Dr Kathy Allen)
UTAS Author:Lee, G (Dr Greg Lee)
ID Code:139585
Year Published:2019
Web of Science® Times Cited:4
Deposited By:Directorate
Deposited On:2020-06-23
Last Modified:2021-04-07
Downloads:0

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