FN Archimer Export Format PT J TI A continental perspective on the timing of environmental change during the last glacial stage in Australia BT AF Cadd, Haidee Petherick, Lynda Tyler, Jonathan Herbert, Annika Cohen, Tim J Sniderman, Kale Barrows, Timothy T. Fulop, Reka H. Knight, Jasper Kershaw, A. Peter Colhoun, Eric A. Harris, Mathew R.P. AS 1:1,2,3;2:4;3:1;4:5;5:2,6;6:2,7;7:6,8;8:6,9;9:5;10:10;11:11;12:3,12; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:; C1 Department of Earth Sciences and Sprigg Geobiology Centre, University of Adelaide, SA, Australia ARC Centre of Excellence for Australian Biodiversity and Heritage, University of Wollongong, NSW, Australia Earth and Sustainability Research Centre (ESSRC), School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia School of Geography, Environment and Earth Sciences, Victoria University of Wellington, New Zealand School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa School of Earth, Atmospheric and Life Sciences, University of Wollongong, NSW, Australia School of the Environment, Geography and Geosciences, University of Portsmouth, United Kingdom School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa Australia's Nuclear Science and Technology Organisation, New Illawarra Rd, Lucas Heights NSW 2234, Australia School of Earth, Atmosphere and Environment, Monash University, VIC, Australia School of Environmental and Life Sciences, University of Newcastle, NSW, Australia School of Geography, Geology and the Environment, Keele University, Staffordshire, United Kingdom C2 UNIV ADELAIDE, AUSTRALIA UNIV WOLLONGONG, AUSTRALIA UNIV NEW SOUTH WALES, AUSTRALIA UNIV WELLINGTON, NEW ZEALAND UNIV WITWATERSRAND, AUSTRALIA UNIV WOLLONGONG, AUSTRALIA UNIV PORTSMOUTH, UK UNIV WITWATERSRAND, SOUTH AFRICA ANSTO, AUSTRALIA UNIV MONASH, AUSTRALIA UNIV NEWCASTLE, AUSTRALIA UNIV KEELE, UK IF 2.797 TC 11 UR https://archimer.ifremer.fr/doc/00694/80579/83796.pdf https://archimer.ifremer.fr/doc/00694/80579/83797.docx LA English DT Article CR IMAGES 3-IPHIS-MD106 MD 131 / AUSCAN BO Marion Dufresne DE ;Last glacial maximum;MIS 2;MIS 3;Pollen;Palaeoclimate;Monte-Carlo change point;Age uncertainty AB The timing and duration of the coldest period in the last glacial stage, often referred to as the last glacial maximum (LGM), has been observed to vary spatially and temporally. In Australia, this period is characterised by colder, and in some places more arid, climates than today. We applied Monte-Carlo change point analysis to all available continuous proxy records covering this period, primarily pollen records, from across Australia (n = 37) to assess this change. We find a significant change point occurred (within uncertainty) at 28.6 ± 2.8 ka in 25 records. We interpret this change as a shift to cooler climates, associated with a widespread decline in biological productivity. An additional change point occurred at 17.7 ± 2.2 ka in 24 records. We interpret this change as a shift towards warmer climates, associated with increased biological productivity. We broadly characterise the period between 28.6 (± 2.8) – 17.7 (± 2.2) ka as an extended period of maximum cooling, with low productivity vegetation that may have occurred as a combined response to reduced temperatures, lower moisture availability and atmospheric CO2. These results have implications for how the spatial and temporal coherence of climate change, in this case during the LGM, can be best interrogated and interpreted. PY 2021 PD JUN SO Quaternary Research SN 0033-5894 PU Cambridge University Press (CUP) VL 102 UT 000675576300004 BP 5 EP 23 DI 10.1017/qua.2021.16 ID 80579 ER EF