

Author: Jury MR
Publisher: Taylor & Francis Ltd
ISSN: 1814-232X
Source: African Journal of Marine Science, Vol.28, Iss.1, 2006-04, pp. : 41-50
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Abstract
The response of the tropical South-East Atlantic Ocean to the El Niño Southern Oscillation (ENSO) was studied for the period 1950–1999. Interaction between the ocean thermocline 'see-saw' and the overlying zonal wind circulation was examined. The two are closely linked through equatorial upwelling dynamics, with the thermocline leading during most of the period. Composite differences in climatic structure in respect of ENSO phase were analysed. Cases were selected based on indices of Pacific sea surface temperature and South-East African rainfall. Prior to an El Niño-induced drought, anomalous easterly flow over the Atlantic strengthens the cold tongue extending from Angola. How these climatic conditions affect fisheries abundance in the southern Benguela was investigated. Higher anchovy
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