Visibility reduction due to particles is size-dependent Particle Scattering and SCATTERING absorption It cross-section J per unit volume AESORPTION 2 DIAMETER (um) Particles of 0. 1-1,0 um size are efficient light-scattering centersVisibility reduction due to particles is size-dependent Particle Scattering and absorption cross-section per unit volume Particles of 0.1-1.0 um size are efficient light-scattering centers