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Communication incl. Poster: BibTeX citation key:  Doumbia
Doumbia, T., Ndiaye, S. A. & Liousse, C. 2009. Characterization of atmospheric pollution in Dakar: focus on aerosol. Work presented at Third International AMMA Conference, July 20—24, at Ouagadougou, Burkina Faso.
Added by: roussot 2009-11-23 20:06:35
Categories: Aerosol and Chemistry, Society-Environment-Climate interactions
Keywords: Aerosol, Health
Creators: Doumbia, Liousse, Ndiaye
Publisher: African Monsoon Multidisciplinary Analyses (Ouagadougou, Burkina Faso)
Collection: Third International AMMA Conference

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This study presents measurements of carbon matter (Black Carbon, BC or Elementary Carbon, EC and Organic Carbon, OC) and chemical constituents contained in the aerosol (PM2.5), realized within the framework of the program POLCA (POLlution des Capitales Africaines) between November, 2007 and November, 2008 at Sandaga market in Dakar. This campaign is one of the first of this type in African tropical regions. These regions are characterized by temperature inversions which limit the dispersal of pollutants, an intense photochemistry and strong anthropogenic emissions (especially the car traffic). The POLCA program, based on the study of the atmospheric pollution in the cities of Bamako (Mali) and Dakar (Senegal), was suggested as a further study of some preliminary results in which have shown a correlation between density of the car traffic and frequency of the lung infections of the surrounding populations. One of the main objectives was to establish the sources of pollution by particles, particularly due to the traffic, to better study the impact on the health.
We were able to establish that on the study area, the car traffic is the main source of material particles and were the source of the high concentrations of pollutants. It appears as well that the combustions of fossil fuels (probably the fire exhausts) and the industrial emissions play an important role on the levels of pollution by the fine particles.
From the study of aerosols in Dakar, it appears that: i) the carbon matter is dominating element in PM2.5 aerosol types; ii) the car traffic is the main source of atmospheric pollution by particles; iii) the human activities in African urban zone can generate high levels of pollution comparable to those in industrialized western countries.
Added by: roussot