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West Africa and the adjacent oceanic regions are very important locations for studying dust properties and their influence on weather and climate. The SHADOW (study of SaHAran Dust Over West Africa) campaign is performing a multiscale and multilaboratory study of aerosol properties and dynamics using a set of in situ and remote sensing instruments at an observation site located at the IRD (Institute for Research and Development) in Mbour, Senegal (14A degrees aEuro-N, 17A degrees aEuro-W). In this paper, we present the results of lidar measurements performed during the first phase of SHADOW (study of SaHAran Dust Over West Africa) which occurred in March-April 2015. The multiwavelength Mie-Raman lidar acquired 3 beta + 2 alpha + 1 delta measurements during this period. This set of measurements has permitted particle-intensive properties, such as extinction and backscattering ngstrom exponents (BAE) for 355/532aEuro-nm wavelengths’ corresponding lidar ratios and depolarization ratio at 532aEuro-nm, to be determined. The mean values of dust lidar ratios during the observation period were about 53aEuro-sr at both 532 and 355aEuro-nm, which agrees with the values observed during the SAMUM-1 and SAMUM-2 campaigns held in Morocco and Cabo Verde in 2006 and 2008. The mean value of the particle depolarization ratio at 532aEuro-nm was 30aEuro-+/- aEuro-4.5aEuro-%; however, during strong dust episodes this ratio increased to 35aEuro-+/- aEuro-5aEuro-%, which is also in agreement with the results of the SAMUM campaigns. The backscattering ngstrom exponent during the dust episodes decreased to -0.7, while the extinction ngstrom exponent, though negative, was greater than -0.2. Low values of BAE can likely be explained by an increase in the imaginary part of the dust refractive index at 355aEuro-nm compared to 532aEuro-nm. The dust extinction and backscattering coefficients at multiple wavelengths were inverted to the particle microphysics using the regularization algorithm and the model of randomly oriented spheroids. The analysis performed has demonstrated that the spectral dependence of the imaginary part of the dust refractive index may significantly influence the inversion results and should be taken into account.