The 7–13 March 2006 dust storm over West Africa: Generation, transport, and vertical stratification

摘要: Several studies have shown the importance of desert dust aerosols in weather forecast models. Nevertheless, has been poorly represented such models and is source some prediction errors, particular for tropical subtropical regions. The purpose this paper to illustrate formation three-dimensional transport a severe storm which occurred March 2006 over West Africa. An intense haze was transported southward Gulf Guinea thereby generating an aerosol optical thickness (AOT) greater than 4 Nigeria. MesoNH mesoscale atmospheric model coupled with new parameterization schemes used plume vertical layering air mass above lower atmosphere monsoon flux layer. It modeled that more 50 g m−2 emitted during event from surface by strong Harmattan wind Sahel region. also when layer located boundary layer, it can modify stability as much 9.5 K terms potential temperature lowest 2000 m atmosphere.