Southern Westerly Winds submit to the ENSO regime: A multiproxy paleohydrology record from Lake Dobson, Tasmania
Andrew BH Rees, Les C Cwynar, Michael-Shawn Fletcher
Quaternary Science Reviews | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2015
The El Niño-Southern Oscillation (ENSO) and Southern Westerly Winds (SWW) profoundly influence synoptic-scale climate in the Southern Hemisphere. Although many studies have invoked either phenomenon to explain trends in proxy data, few have demonstrated the transition from a climate dominated by SWW flow to one controlled by El Niño activity, which is postulated to have occurred after 5 cal ka BP in the mid-latitudes of the Southern Hemisphere. Tasmania, southeast Australia, is ideally situated to detect changes in both of these climatic controls. Currently, El Niño and La Niña events result in drier and wetter conditions island-wide, respectively, with the greatest impact in the north. Furt..View full abstract
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Awarded by Natural Sciences and Engineering Research Council of Canada (NSERC)
We thank Marian and Rob Wiltshire for their hospitality and support. We also thank Maarten Blaauw for his invaluable help with clam, Owen Brown for assisting with the collection of the grain size data, and Pierre Francus and Ben Hines for consulting with the interpretation of the Itrax results. John Southon provided the radiocarbon dates. We are also grateful to Greg Jordan, Vera Markgraf, and Jamie Shulmeister for providing helpful comments on earlier drafts. Finally, we thank the two anonymous reviewers whose comments made this a stronger manuscript. This research was supported by a Natural Sciences and Engineering Research Council of Canada (NSERC) 39785-2010 Discovery grant to Les C. Cwynar and an NSERC Postgraduate Scholarship to Andrew B.H. Rees.