title: Intra-urban air pollution in a rapidly growing Sahelian city.
abstract: In this paper we analyze spatial and temporal variations of air pollution (PM(1), PM(2.5), PM(10), CO, NO(x), O(3), Toluene and Benzene) and climate in areas of different development typology in Ouagadougou, Burkina Faso. Analyses are based on measurements from fixed sites and car traverse measurements during field studies in 2007 and 2010. Large spatial and temporal variations were found, showing a generally poor air quality situation, with extreme levels of PM(10), commonly exceeding air quality guidelines of WHO. Pollution levels increase considerably with increased atmospheric stability. Important sources were transported dust and re-suspension of dust from unpaved roads, but also traffic emissions and biomass burning. The spatial variations are examined with focus on effects for variations in potential exposure depending on for example area of residence and daily activity pattern, showing that great differences are likely to exist. Ouagadougou, like most developing countries worldwide, currently experiences an extremely rapid population growth in combination with limited financial means. This is likely to create increasingly harmful air pollution situations for the rapidly growing populations of these areas, and shows an urgent need for increased understanding of the pollution situation as well as development of mitigation strategies.
authors.affiliation: Department of Earth Science, Urban Climate Group, University of Gothenburg, Box 460, SE-405 30, Gothenburg, Sweden. Electronic address: Jenny.Linden@gvc.gu.se.
authors.forename: J
authors.initials: J
authors.lastname: Lindén
authors.affiliation: Department of Chemistry, Atmospheric Science, University of Gothenburg, SE-412 96, Gothenburg, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Boman
authors.affiliation: Department of Earth Science, Urban Climate Group, University of Gothenburg, Box 460, SE-405 30, Gothenburg, Sweden.
authors.forename: B
authors.initials: B
authors.lastname: Holmer
authors.affiliation: Department of Earth Science, Urban Climate Group, University of Gothenburg, Box 460, SE-405 30, Gothenburg, Sweden.
authors.forename: S
authors.initials: S
authors.lastname: Thorsson
authors.affiliation: Department of Conservation, Box 130, University of Gothenburg, SE-405 30, Gothenburg, Sweden.
authors.forename: I
authors.initials: I
authors.lastname: Eliasson
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D001554:Benzene / Q000032:analysis; D002050:Burkina Faso; D002248:Carbon Monoxide / Q000032:analysis; D002947:Cities; D003906:Developing Countries; D004784:Environmental Monitoring; D009589:Nitrogen Oxides / Q000032:analysis; D010126:Ozone / Q000032:analysis; D052638:Particulate Matter / Q000032:analysis; D011158:Population Growth; D014050:Toluene / Q000032:analysis
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D052638:Particulate Matter; D014050:Toluene; D010126:Ozone; D002248:Carbon Monoxide; D001554:Benzene