Evidence of wet-dry cycles and mega-droughts in the Eemian climate of southeast Australia

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dc.contributor.authorMcGowan, HAen_AU
dc.contributor.authorCampbell, Men_AU
dc.contributor.authorCallow, JNen_AU
dc.contributor.authorLowry, Aen_AU
dc.contributor.authorWong, HKYen_AU
dc.date.accessioned2022-09-02T03:06:17Zen_AU
dc.date.available2022-09-02T03:06:17Zen_AU
dc.date.issued2020-10-22en_AU
dc.date.statistics2022-08-29en_AU
dc.descriptionOpen Access. This article is licensed under a Creative Commons Attribution 4.0 International License.en_AU
dc.description.abstractUnderstanding past climate variability is critical to informing debate of likely impacts of global warming on weather and climate, and water resources. Here we present a near annual resolution reconstruction of climate developed from a speleothem that spans the Eemian [Marine Isotope Stage 5e (MIS 5e)] from 117,500 to 123,500 years BP—the most recent period in the Earth’s history when temperatures were similar to those of today. Using 25 Mg, 88Sr, and 137Ba as proxies, we show the first indication of solar and teleconnection cyclic forcing of Eemian climate in southeast Australia, a region at present often affected by severe drought and bushfires. We find evidence for multi-centennial dry periods interpreted as mega-droughts, and highlight the importance of understanding the causes of these in the context of a rapidly warming world, where temperatures are now, or projected to exceed those of the Eemian. © The Author(s) 2020en_AU
dc.description.sponsorshipThis work was funded by Snowy Hydro Ltd., with the support of The University of Queensland and The University of Western Australia. MC was supported by an Australian Postgraduate Award Scholarship and an Australian Government Research Training Program (RTP) Scholarship, UWA Safety Net Top-Up Scholarship and an Australian Institute of Nuclear Science and Engineering Postgraduate Research Award.en_AU
dc.identifier.articlenumber18000en_AU
dc.identifier.citationMcGowan, H., Campbell, M., Callow, J. N., Lowry, A., & Wong, H. (2020). Evidence of wet-dry cycles and mega-droughts in the Eemian climate of southeast Australia. Scientific reports, 10(1), 1-10, 18000. doi:10.1038/s41598-020-75071-zen_AU
dc.identifier.issn2045-2322en_AU
dc.identifier.journaltitleScientific reportsen_AU
dc.identifier.pagination1-10en_AU
dc.identifier.urihttps://doi.org/10.1038/s41598-020-75071-zen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13714en_AU
dc.identifier.volume10en_AU
dc.language.isoenen_AU
dc.publisherSpringer Natureen_AU
dc.subjectClimatesen_AU
dc.subjectClimatic changeen_AU
dc.subjectPaleoclimatologyen_AU
dc.subjectDroughtsen_AU
dc.subjectAtmospheric precipitationsen_AU
dc.subjectGreenhouse gasesen_AU
dc.subjectAustraliaen_AU
dc.titleEvidence of wet-dry cycles and mega-droughts in the Eemian climate of southeast Australiaen_AU
dc.typeJournal Articleen_AU
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