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Climate trends at Macquarie Island and expectations of future climate change in the sub-Antarctic

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Adams, N (2009) Climate trends at Macquarie Island and expectations of future climate change in the sub-Antarctic. Papers and Proceedings of the Royal Society of Tasmania, 143 (1). pp. 1-8. ISSN 0080-4703

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Abstract

Macquarie Island has experienced a marked shift in its climate since 1970, with increasing precipitation, accompanied by a steady increase in mean wind speed associated with increased cyclonic activity. These trends are consistent with an increase in the Southern Annular Mode (SAM) index, albeit with a shift to an anomalous atmospheric trough over the western Pacific Ocean. However, our understanding of the twentieth-century climate across the entire sub-Arnarctic is limited by very sparse data and the relatively poor quality of global re-analyses across the Southern Hemisphere. Chapter 10 of the Inter-governmental Panel on Climate Change (IPCC) fourth Assessment Report (AR4) provides an assessment of global atmospheric trends out to the end of the twenty-first century and provides some clues as to the regional trends expected across the sub-Antarctic. This paper provides a synopsis of the changes experienced at Macquarie Island, and a look to future trends, and the need for increased atmospheric research in the mid- to high latitudes of the Southern Hemisphere.

Item Type: Article
Keywords: Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library
Journal or Publication Title: Papers and Proceedings of the Royal Society of Tasmania
Page Range: pp. 1-8
ISSN: 0080-4703
Additional Information: Copyright Royal Society of Tasmania
Date Deposited: 15 May 2012 02:43
Last Modified: 18 Nov 2014 04:31
URI: http://eprints.utas.edu.au/id/eprint/13212
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