Jeudi 5 janvier - Brazil-France-Africa cooperation in tropical Atlantic
de 11:00 à 12:00
|Où ?||Salle Lyot|
Moacyr Araujo, Associate Professor and vice-director of the Department of Oceanography, DOCEAN-UFPE, Brazil
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Title : Brazil-France-Africa cooperation in tropical Atlantic : Main scientific topics and research frameworks
The tropical Atlantic ocean is a complex area where zonal currents and counter-currents coexist with strong ocean-atmosphere heat exchanges as well as local upwelling of cold waters. It is a critical region for processes associated to the Meridional Overturning Circulation (MOC), such as cross-equatorial exchanges, and for SST variability that impacts on climate variability of the coupled tropical ocean/atmosphere system. In the tropical ocean, cold thermocline waters of non-equatorial origin from both hemispheres are transformed into warm waters masses via entrainment and subsequent surface heat flux, and then escape from this region northward as well as southward, although the net heat transport is northward. Several research programs have been proposed to study the transport and heat variability in this area. Most of these efforts focus on air-sea interaction processes related to climate change investigations. We intend to present an overview of the ocean research activities issued from joint Brazil-France-Africa efforts during the past two decades (and underway) in the tropical Atlantic. Scientific priority topics as well as main research cooperation frameworks will be presented.