Summary of Abstract Submission

Abstract Submission No. IO50-04-0034PresentationOral


Isabelle Ansorge*1, Marcel van den Berg2, Mike Roberts2, Sabrina Speich3, Thierry Terre4

1 UCT Oceanography, South Africa
2 DEA Oceans and Coasts, South Africa
3 UBO, France
4 IFREMER, France


Schiermeier┐s 2013 article ┐Ocean under Surveillance┐ in the journal Nature highlights the need for an extensive array of continuous measurements across both the northern and southern Atlantic, as well as its neighbouring basins. The call for these observations is due to the ocean┐s Meridional Overturning Circulation (MOC), a global reaching system of ocean currents. It is the primary mechanism for the transport and storage of heat, freshwater and carbon between ocean basins. Climate models have shown that past changes in the strength of the MOC were linked to climate variations, with future predictions hinting that the MOC will continue to modulate climate change scenarios on time-scales from decades to centuries. Recognition of the critical importance of the MOC in this region led to the creation of an International initiative on the South Atlantic Meridional Overturning Circulation (SAMOC). The SAMOC-SA initiative consists of a number of observational platforms, repeat hydrographic lines aimed at monitoring long-term physical-chemical changes within the ocean current systems south of Africa, as well as their impact on local climate. Following an investment of over $6 million, the SAMOC-SA array, which consists of tall moorings, CPIES, full depth CTD stations, Argo and Glider deployments, additional time on the SA Agulhas II as well as a multitude of underway and surface measurements, is now complete. This paper highlights the opportunities and challenges faced by scientists in South Africa in monitoring the Agulhas Leakage and its role in the global MOC.