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Synchronicity of Historical Dry Spells in the Southern Hemisphere : Volume 10, Issue 12 (02/12/2013)

By Verdon-kidd, D. C.

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Book Id: WPLBN0004011605
Format Type: PDF Article :
File Size: Pages 20
Reproduction Date: 2015

Title: Synchronicity of Historical Dry Spells in the Southern Hemisphere : Volume 10, Issue 12 (02/12/2013)  
Author: Verdon-kidd, D. C.
Volume: Vol. 10, Issue 12
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Kiem, A. S., & Verdon-Kidd, D. C. (2013). Synchronicity of Historical Dry Spells in the Southern Hemisphere : Volume 10, Issue 12 (02/12/2013). Retrieved from http://hawaiilibrary.net/


Description
Description: Environmental and Climate Change Research Group, School of Environmental and Life Sciences, Faculty of Science and IT, University of Newcastle, Newcastle, Australia. A shift in climate occurred during the mid-1970s that affected the hydroclimate of the Southern Hemisphere resulting in drying trends across continental regions including Australia, New Zealand and southern and western Africa. There is also anecdotal evidence of other periods of climatic synchronicity in the Southern Hemisphere (e.g. the 1920s and 1940s), indicating that the mid 1970s event may not be anomalous. This paper identifies periods within the last ~120 yr using statistical analysis where dry spells (in terms of annual to multi-decadal rainfall deficiencies) have coincided across the continental Southern Hemisphere in order to characterize temporal consistency. It is shown that synchronicity of dry spells is (a) most likely common over the last 120 yr and (b) associated with changes in the large-scale climate modes of the Pacific, Indian and Southern Oceans. Importantly, the findings presented in this paper have marked implications for drought management and drought forecasting studies in the Southern Hemisphere.

Summary
Synchronicity of historical dry spells in the Southern Hemisphere

Excerpt
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