Calculated Visibility Reduction Based on Atmospheric Data

FIGURE 15.9 Angstrom exponent for a lognormally distributed water aerosol (ag = 2.0) with refractive index m — 1.33 — Oi in the wavelength range X. =- 550 to 700nm. (Courtesy of J. A. Ogren.) 

If the aerosol number distribution is represented in a certain size range by a relation of the form 

4 CALCULATED VISIBILITY REDUCTION BASED ON ATMOSPHERIC DATA 

TABLE 15.4 Size Distributions (Lognormal) of Different Classes of Atmospheric Aerosol 

Nuclei Mode Accumulation Mode Coarse-Particle Mode 

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CALCULATED VISIBILITY REDUCTION BASED ON ATMOSPHERIC DATA 1137 modes are as follows ... 

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