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Spatial air pollution modelling for a West-African town

Gebreab, Sirak Zenebe and Vienneau, Danielle and Feigenwinter, Christian and Bâ, Hampâté and Cissé, Guéladio and Tsai, Ming-Yi. (2015) Spatial air pollution modelling for a West-African town. Geospatial Health, 10 (321). pp. 205-214.

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Abstract

Land use regression (LUR) modelling is a common approach used in European and Northern American epidemiological studies to assess urban and traffic related air pollution exposures. Studies applying LUR in Africa are lacking. A need exists to understand if this approach holds for an African setting, where urban features, pollutant exposures and data availability differ considerably from other continents. We developed a parsimonious regression model based on 48-hour nitrogen dioxide (NO2) concentrations measured at 40 sites in Kaedi, a medium sized West-African town, and variables generated in a geographic information system (GIS). Road variables and settlement land use characteristics were found to be important predictors of 48-hour NO2 concentration in the model. About 68% of concentration variability in the town was explained by the model. The model was internally validated by leave-one-out cross-validation and it was found to perform moderately well. Furthermore, its parameters were robust to sampling variation. We applied the model at 100 m pixels to create a map describing the broad spatial pattern of NO2 across Kaedi. In this research, we demonstrated the potential for LUR as a valid, cost-effective approach for air pollution modelling and mapping in an African town. If the methodology were to be adopted by environmental and public health authorities in these regions, it could provide a quick assessment of the local air pollution burden and potentially support air pollution policies and guidelines
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Meteorologie, Klimatologie und Fernerkundung > Meteorologie (Parlow)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Eco System Health Sciences > Ecosystem Services, Climate & Health (Cissé)
UniBasel Contributors:Feigenwinter, Christian and Cissé, Guéladio and Vienneau, Danielle
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:PAGEPress
ISSN:1827-1987
e-ISSN:1970-7096
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:21 Oct 2016 11:47
Deposited On:11 Apr 2016 12:19

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