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The relationship between transmittance and reflectance measurements of “soiling index”
Abstract Experimental relationships between transmittance and reflectance measurements of suspended participate matter have been determined for aerosols of constant optical properties and for the atmospheric aerosol in Pittsburgh, Pennsylvania. The slopes of the transmittance versus reflectance curves for dispersions of coal, limestone, fly ash, and a coal-limestone mixture were significantly different for all inter-comparisons but one. The correlation coefficients ranged from 0.87 to 0.99. For atmospheric aerosol samples obtained at three sites in the Pittsburgh area no significant differences were found when the slopes of the transmittance vs. reflectance curves were compared. The correlation coefficients ranged from 0.92 to 0.99. In terms of commonly used indices of soiling potential the relationships between transmittance and reflectance could be expressed as 1 COH ≅ 0.5 ± 0.1 RUDS for the three field locations.
The relationship between transmittance and reflectance measurements of “soiling index”
Abstract Experimental relationships between transmittance and reflectance measurements of suspended participate matter have been determined for aerosols of constant optical properties and for the atmospheric aerosol in Pittsburgh, Pennsylvania. The slopes of the transmittance versus reflectance curves for dispersions of coal, limestone, fly ash, and a coal-limestone mixture were significantly different for all inter-comparisons but one. The correlation coefficients ranged from 0.87 to 0.99. For atmospheric aerosol samples obtained at three sites in the Pittsburgh area no significant differences were found when the slopes of the transmittance vs. reflectance curves were compared. The correlation coefficients ranged from 0.92 to 0.99. In terms of commonly used indices of soiling potential the relationships between transmittance and reflectance could be expressed as 1 COH ≅ 0.5 ± 0.1 RUDS for the three field locations.
The relationship between transmittance and reflectance measurements of “soiling index”
Saucier, Jean-Yves (author) / Sansone, Eric B (author)
Atmospheric Environment ; 6 ; 37-43
1971-06-07
7 pages
Article (Journal)
Electronic Resource
English
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