TITLE:
Simulation and Evaluation of Dust Emission with Polair3D-SIREAM Model over West Africa Focused on Ouagadougou (Burkina Faso)
AUTHORS:
Bernard Nana, Oumar Sanogo, Issoufou Ouarma, Antoine Béré, Jean Koulidiati
KEYWORDS:
Air Pollution, Dust Emission Modelling, PM10, Aerosol Optical Thickness, Polair3D-SIREAM
JOURNAL NAME:
Journal of Environmental Protection,
Vol.10 No.1,
January
21,
2019
ABSTRACT: 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.