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Relationships between the El-Niņo Southern Oscillation and spate flows in southern Africa and Australia

Citation

Whiting, JP and Lambert, MF and Metcalfe, AV and Adamson, PT and Franks, SW and Kuczera, G, Relationships between the El-Nino Southern Oscillation and spate flows in southern Africa and Australia, Hydrology and Earth System Sciences, 8, (6) pp. 1118-1128. ISSN 1027-5606 (2004) [Refereed Article]


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Licenced under Creative Commons Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/legalcode

DOI: doi:10.5194/hess-8-1118-2004

Abstract

The flow records of arid zone rivers are characterised by a high degree of seasonal variability, being dominated by long periods of very low or zero flow. Discrete flow events in these rivers are influenced by aseasonal factors such as global climate forcings. The atmospheric circulations of the El-Niņo Southern Oscillation (ENSO) have been shown to influence climate regimes across many parts of the world. Strong teleconnections between changing ENSO regimes and discharges are likely to be observed in highly variable arid zones. In this paper, the influence of ENSO mechanisms on the flow records of two arid zone rivers in each of Australia and Southern Africa are identified. ENSO signals, together with multi-decadal variability in their impact as identified through seasonal values of the Interdecadal Pacific Oscillation (IPO) index, are shown to influence both the rate of occurrence and the size of discrete flow episodes in these rivers.

Item Details

Item Type:Refereed Article
Keywords:flood, drought, ENSO, IPO, PDO, climate variability, climate change, hydrology
Research Division:Engineering
Research Group:Environmental Engineering
Research Field:Environmental Technologies
Objective Division:Environment
Objective Group:Land and Water Management
Objective Field:Land and Water Management of environments not elsewhere classified
Author:Franks, SW (Professor Stewart Franks)
ID Code:93395
Year Published:2004
Web of Science® Times Cited:2
Deposited By:Office of the School of Engineering
Deposited On:2014-07-31
Last Modified:2014-08-05
Downloads:188 View Download Statistics

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