Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
doi:10.5194/cp-2016-127
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
15 Dec 2016
Review status
This discussion paper is under review for the journal Climate of the Past (CP).
Late Holocene temperature variability in Tasmania inferred from borehole temperature data
Asadusjjaman Suman, Fiona Dyer, and Duanne White Institute for Applied Ecology, University of Canberra, ACT 2601, Australia
Abstract. Thirty six borehole temperature depth profiles were analysed to reconstruct the Ground Surface Temperature History (GSTH) from eastern Tasmania for the past five centuries. We used the Singular Value Decomposition method to invert borehole temperatures to produce temperature histories. The quality of borehole data was classified as high or low based on model misfit. The quality of the borehole data was not dependent on topography, or land use. Analysis reveals that 3–5 high quality borehole temperature depth profiles were adequate to reconstruct robust paleotemperature records from any area. Temperature changes were greatest around the north east coast and decreases towards midland of Tasmania. Warm East Australian Current (EAC) flow towards north east coast of Tasmania during summer was considered a prime driver of warmer temperatures observed for the north east coast. Average, GSTH reconstructed from Tasmanian boreholes shows temperature increases about 1.2 ± 0.2 °C during the past five centuries. Some boreholes show temperature cooling in the beginning of 20th Century that may be an indication of late LIA response in Tasmania. Reconstructed temperatures were consistent with meteorological records and other proxy records from Tasmania during their period of overlap.

Citation: Suman, A., Dyer, F., and White, D.: Late Holocene temperature variability in Tasmania inferred from borehole temperature data, Clim. Past Discuss., doi:10.5194/cp-2016-127, in review, 2016.
Asadusjjaman Suman et al.
Asadusjjaman Suman et al.
Asadusjjaman Suman et al.

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Short summary
Thirty six borehole temperature depth profiles were analysed to reconstruct the Ground Surface Temperature History (GSTH) from eastern Tasmania for the past five centuries. Temperature changes were greatest around the north east coast and decreases towards midland of Tasmania. Average, GSTH reconstructed from Tasmanian boreholes shows temperature increases about 1.2 ± 0.2 °C during the past five centuries.
Thirty six borehole temperature depth profiles were analysed to reconstruct the Ground Surface...
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