Atmospheric aerosol mass concentration and scattering coefficient in a midlake region

The relationship between aerosol mass concentration ( M) and scattering coefficient ( B scat ) in urban and rural land-based environments has been well documented. In this study, comparison of M and B scat in the mid-Lake Michigan region has revealed a linear regression line B scat = (0.298 ± 0.036)...

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Bibliographic Details
Published in:Atmospheric environment 1979, Vol.13 (11), p.1597-1600
Main Authors: Davé, Mehul, Dolske, Donald, Sievering, Herman
Format: Article
Language:English
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Summary:The relationship between aerosol mass concentration ( M) and scattering coefficient ( B scat ) in urban and rural land-based environments has been well documented. In this study, comparison of M and B scat in the mid-Lake Michigan region has revealed a linear regression line B scat = (0.298 ± 0.036) + (0.0138 ± 0.0029) M with correlation coefficient 0.97. The slope of this regression is substantially less than the values reported previously in land-based settings. This difference is accounted for by the midlake aerosol size distribution, which exhibits a distinctly greater number concentration of secondary aerosols as measured by an active scattering aerosol spectrometer. The integrating nephelometer is confirmed to be a good instrument for in situ measurement of mass concentration. However, the slope of the linear regression line between M and B scat is dependent on the ambient aerosol size distribution and, therefore, on the sampling environment.
ISSN:0004-6981
DOI:10.1016/0004-6981(79)90069-6