Climate variability over the last 35,000 years recorded in marine and terrestrial archives in the Australian region: an OZ-INTIMATE compilation

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dc.contributor.authorReeves, JMen_AU
dc.contributor.authorBarrows, TTen_AU
dc.contributor.authorCohen, TJen_AU
dc.contributor.authorKiem, ASen_AU
dc.contributor.authorBostock, HCen_AU
dc.contributor.authorFitzsimmons, KEen_AU
dc.contributor.authorJansen, JDen_AU
dc.contributor.authorKemp, Jen_AU
dc.contributor.authorKrause, Cen_AU
dc.contributor.authorPhipps, SJen_AU
dc.contributor.authorPetherick, LMen_AU
dc.date.accessioned2014-09-03T00:09:28Zen_AU
dc.date.available2014-09-03T00:09:28Zen_AU
dc.date.issued2013-08-15en_AU
dc.date.statistics2014-09-03en_AU
dc.descriptionOz-Intimate Members: L. K. Armand, L. K. Ayliffe, M. Curran, P. De Deckker, L. S. Devriendt, J. Dodson, A. Dosseto, G. B. Dunbar, R. N. Drysdale, D. Fink, M. Fischer, M.S. Fletcher, T. Fujioka, M.K. Gagan, ML. Griffiths, D. Haberlah, S. G. Haberle, U. Heikkila, H. Heijnis, P. P. Hesse, A. Hilgers, M. Ho, W. Howard, Q. Hua, T. Kelly, J. Larsen, S. Lewis, J. Lomax, A. Mackintosh, J. H. May, H. V. McGregor, K. Meisner, S. D. Mooney, P.T. Moss, G. C. Nanson, J. Pedro, A. Purcell, J. Shulmeister, C. Sloss, Z. Swander, J. Tibby, P. Treble, S. van der Kaars, D. White, C. Woodward.en_AU
dc.description.abstractThe Australian region spans some 600 of latitude and 500 of longitude and displays considerable regional climate variability both today and during the Late Quaternary. A synthesis of marine and terrestrial climate records, combining findings from the Southern Ocean, temperate, tropical and arid zones, identifies a complex response of climate proxies to a background of changing boundary conditions over the last 35,000 years. Climate drivers include the seasonal timing of insolation, greenhouse gas content of the atmosphere, sea level rise and ocean and atmospheric circulation changes. Our compilation finds few climatic events that could be used to construct a climate event stratigraphy for the entire region, limiting the usefulness of this approach. Instead we have taken a spatial approach, looking to discern the patterns of change across the continent. The data identify the clearest and most synchronous climatic response at the time of the Last Glacial Maximum (LGM) (21 +/- 3 ka), with unambiguous cooling recorded in the ocean, and evidence of glaciation in the highlands of tropical New Guinea, southeast Australia and Tasmania. Many terrestrial records suggest drier conditions, but with the timing of inferred snowmelt, and changes to the rainfall/runoff relationships, driving higher river discharge at the LGM. In contrast, the deglaciation is a time of considerable south-east to north-west variation across the region. Warming was underway in all regions by 17 ka. Post-glacial sea level rise and its associated regional impacts have played an important role in determining the magnitude and timing of climate response in the north-west of the continent in contrast to the southern latitudes. No evidence for cooling during the Younger Dryas chronozone is evident in the region, but the Antarctic cold reversal clearly occurs south of Australia. The Holocene period is a time of considerable climate variability associated with an intense monsoon in the tropics early in the Holocene, giving way to a weakened monsoon and an increasingly El Nino-dominated ENSO to the present. The influence of ENSO is evident throughout the southeast of Australia, but not the southwest. This climate history provides a template from which to assess the regionality of climate events across Australia and make comparisons beyond our region.© 2013, Elsevier Ltd.en_AU
dc.identifier.citationReeves, J. M., Barrows, T. T., Cohen, T. J., Kiem, A. S., Bostock, H. C., Fitzsimmons, K. E., Jansen, J. D., Kemp, J., Krause, C., Petherick, L., Phipps, S. J., & Oz-Intimate Members (2013). Climate variability over the last 35,000 years recorded in marine and terrestrial archives in the australian region: An oz-intimate compilation. Quaternary Science Reviews, 74, 21-34. doi:10.1016/j.quascirev.2013.01.001en_AU
dc.identifier.govdoc5227en_AU
dc.identifier.issn0277-3791en_AU
dc.identifier.journaltitleQuaternary Science Reviewsen_AU
dc.identifier.pagination21-34en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.quascirev.2013.01.001en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5838en_AU
dc.identifier.volume74en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science Ltd.en_AU
dc.subjectAustraliaen_AU
dc.subjectClimatesen_AU
dc.subjectCoolingen_AU
dc.subjectGlaciersen_AU
dc.subjectVariationsen_AU
dc.subjectRainen_AU
dc.titleClimate variability over the last 35,000 years recorded in marine and terrestrial archives in the Australian region: an OZ-INTIMATE compilationen_AU
dc.typeJournal Articleen_AU
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