Author(s)

Bernard Nana^1,2, Oumar Sanogo³, Issoufou Ouarma¹, Antoine Béré¹, Jean Koulidiati¹

¹Laboratoire de Physique et de Chimie de l’Environnement (LPCE), Université Ouaga I Professeur Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
²Institut des Sciences (IDS), Ouagadougou, Burkina Faso.
³Institut de Recherche en Sciences Appliquées et Technologies, Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso.

The study of air pollution is recent in West Africa. There is a lack of data on air pollution. However, some studies conducted in West Africa show that air quality is a concern. Population growth and massive vehicles imports are contributing to the deterioration of this air quality. In this work, we present the modelling of desert aerosols using a CTM Polair3D-SIREAM. The objective is to evaluate the ability of Polair3D-SIREAM to reproduce observations of PM₁₀ and Aerosol Optical Thicknesses (AOT). A simulation with Polair3D-SIREAM was carried out in West Africa, focused on Ouagadougou (Burkina Faso) for 2007. The model of Marticorena and Bergametti (1995), MB95, was used to estimate desert aerosols emissions. The total emission of dust modelled is 52.2 Tg. For the evaluation of PM₁₀, the simulated averages remained within the same orders of magnitude as the observed averages. Correlations are low in all the observation sites. The other indicators are similar to those found by Schmechtig et al. (2011). Performance criteria of Boylan and Russel (2006) are met for the observation sites of Ouagadougou and Ilorin (Nigeria). For the AOTs, the correlations are significantly improved, in particular, at the sites of Ouagadougou and Ilorin. Performance criteria of Boylan are met for all observation sites. However, the performance goals are only achieved for Ouagadougou and Ilorin.

Air Pollution, Dust Emission Modelling, PM10, Aerosol Optical Thickness, Polair3D-SIREAM

Nana, B. , Sanogo, O. , Ouarma, I. , Béré, A. and Koulidiati, J. (2019) Simulation and Evaluation of Dust Emission with Polair3D-SIREAM Model over West Africa Focused on Ouagadougou (Burkina Faso). Journal of Environmental Protection, 10, 80-102. doi: 10.4236/jep.2019.101006.