First triple-wavelength lidar observations of depolarization and extinction-to-backscatter ratios of Saharan dust - Haarig, M.; Ansmann, A.; Engelmann, R.; Baars, H.; Althausen, D.; Toledano, C.; Torres, B.; Radenz, M.; Wandinger, U. (Atmos. Chem. Phys. Discuss., 2021)