Monitoring the oceanic flow between Africa and Antarctica : report of the first GoodHope cruise

Ansorge, I.J. and Speich, S. and Lutjeharms, J.R.E. and Goni, G.J. and Rautenbach, C.J. de W. and Froneman, P.W. and Rouault, M. and Garzoli, S. (2005) Monitoring the oceanic flow between Africa and Antarctica : report of the first GoodHope cruise. South African Journal of Science, 101 (1 & 2). pp. 29-35. ISSN 0038-2353




The Southern Ocean plays a major role in the global oceanic circulation, as a component of the Meridional Overturning Circulation, and it is postulated that it has a great influence on present-day climate. However, our understanding of its complex three-dimensional dynamics and of the impact of its variability on the climate system is rudimentary. The newly constituted, international GoodHope research venture aims to address this knowledge gap by establishing a programme of regular observations across the Southern Ocean between the African and Antarctic continents. The objectives of this programme are fivefold: (1) to improve understanding of Indo-Atlantic inter-ocean exchanges and their impact on the global thermohaline circulation and thus on global climate change; (2) to understand in more detail the influence these exchanges have on the climate variability of the southern African subcontinent; (3) to monitor the variability of the main Southern Ocean frontal systems associated with the Antarctic Circumpolar Current; (4) to study air-sea exchanges and their role on the global heat budget, with particular emphasis on the intense exchanges occurring within the Agulhas Retroflection region south of South Africa, and (5) to examine the role of major frontal systems as areas of elevated biological activity and as biogeographical barriers to the distribution of plankton. We present here preliminary results on the physical and biological structure of the frontal systems using the first GoodHope transect that was completed during February-March 2004.

Item Type:Article
Additional Information:Research in Action
Uncontrolled Keywords:oceanic regions; Southern Ocean; oceanic circulation; ocean circulation; oceanography; global climate change; GoodHope cruise; Indo-Atlantic ocean; Southern Africa; Antarctic Circumpolar Current; Agulhas Retroflection region;
Subjects:Y Unknown > Subjects to be assigned
Divisions:Research Institutes and Units > Southern Ocean Group
Faculty > Faculty of Science > Zoology & Entomology
ID Code:343
Deposited By: Mrs Eileen Shepherd
Deposited On:05 Oct 2006
Last Modified:06 Jan 2012 16:17
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