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Communication incl. Poster: BibTeX citation key:  Kouadioa
Kouadio, A. E., Kouadio, Y., Zahiri, E.-P., Aman, A., Assamoi, E. & Bourlès, B. 2009. Influence of the coastal and equatorial upwellings of the Gulf of Guinea on the precipitations along its coastline during the boreal summer. Work presented at Third International AMMA Conference, July 20—24, at Ouagadougou, Burkina Faso.
Added by: Devic 2009-10-09 10:10:08    Last Edited by: roussot 2009-10-16 16:33:14
Categories: General
Keywords: Climate
Creators: Aman, Assamoi, Bourlès, Kouadio, Kouadio, Zahiri
Publisher: African Monsoon Multidisciplinary Analyses (Ouagadougou, Burkina Faso)
Collection: Third International AMMA Conference

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West Africa presents a major challenge for environmental monitoring. Rainfall over the northern part of West Africa provides a good example of such a challenge. Rainfall is an essential parameter in climate change research; it can be employed in a range of climatology applications, and has many practical uses such as in agriculture, fisheries, health. The West Africa climate is under the control of a dominant atmospheric features and surface conditions. So, the Gulf of Guinea (GG) has been extensively studied as it represents firstly the principal source of the water vapor which can constitute most of the precipitation recording especially in the Saharan area. Secondly, a seasonal upwelling takes place in this area in boreal summer, especially from Benin to Cote d’Ivoire coasts and at the equator. The impact of the coastal upwelling on ocean resources has been actively studied. Paradoxically, the impact of the coastal and equatorial upwelling systems on the precipitation along the coastal area is still poorly known.
The main purpose of this study is to point out a possible connection between the seasonal upwelling and the climatic conditions along the northern coast of the Gulf of Guinea. This study shows that the coastal precipitations of the July-September period are not jointly influenced by the coastal and equatorial Sea Surface Temperature (SST). The continental areas which are more subject to coastal and equatorial upwellings influence are those close to the area of the release and intensification of the coastal cooling during the boreal summer. These results should be confirmed by the currently operational Modele Atmospherique Regional (MAR) running in the Laboratoire de Physique de l’Atmosphere et de Mecaniques des Fluides (LAPA-MF) at the University of Cocody.
Last Edited by: roussot