Forest Fire Smoke Layers Observed in the Free Troposphere over Portugal with a Multiwavelength Raman Lidar: Optical and Microphysical Properties
Figure 7
Relative frequency distributions of (a) backscatter and extinction related Ångström exponents (355/532 nm) and (b) lidar ratios at 355 and 532 nm, considering the four different periods of measurements on 17, 18, and 19 October 2011.