Single Scattering Albedo Monitor for Airborne Particulates. Onasch, T., B., Massoli, P., Kebabian, P., L., Hills, F., B., Bacon, F., W., & Freedman, A. Aerosol Science and Technology, 49(4):267-279, Taylor & Francis, 3, 2015.
Single Scattering Albedo Monitor for Airborne Particulates [link]Website  abstract   bibtex   
We describe a robust, compact, field deployable instrument (the CAPS PMssa) that simultaneously measures airborne particle light extinction and scattering coefficients and thus the single scattering albedo (SSA) on the same sample volume. With an appropriate change in mirrors and light source, measurements have been made at wavelengths ranging from 450 to 780 nm. The extinction measurement is based on cavity attenuated phase shift (CAPS) techniques as employed in the CAPS PMex particle extinction monitor; scattering is measured using integrating nephelometry by incorporating a Lambertian integrating sphere within the sample cell. The scattering measurement is calibrated using the extinction measurement. Measurements using ammonium sulfate particles of various sizes indicate that the response of the scattering channel with respect to measured extinction is linear to within 1% up to 1000 Mm−1 and can be extended further (4000 Mm−1) with additional corrections. The precision in both measurement channels is l...
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 title = {Single Scattering Albedo Monitor for Airborne Particulates},
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 year = {2015},
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 pages = {267-279},
 volume = {49},
 websites = {http://www.tandfonline.com/doi/abs/10.1080/02786826.2015.1022248?journalCode=uast20},
 month = {3},
 publisher = {Taylor & Francis},
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 abstract = {We describe a robust, compact, field deployable instrument (the CAPS PMssa) that simultaneously measures airborne particle light extinction and scattering coefficients and thus the single scattering albedo (SSA) on the same sample volume. With an appropriate change in mirrors and light source, measurements have been made at wavelengths ranging from 450 to 780 nm. The extinction measurement is based on cavity attenuated phase shift (CAPS) techniques as employed in the CAPS PMex particle extinction monitor; scattering is measured using integrating nephelometry by incorporating a Lambertian integrating sphere within the sample cell. The scattering measurement is calibrated using the extinction measurement. Measurements using ammonium sulfate particles of various sizes indicate that the response of the scattering channel with respect to measured extinction is linear to within 1% up to 1000 Mm−1 and can be extended further (4000 Mm−1) with additional corrections. The precision in both measurement channels is l...},
 bibtype = {article},
 author = {Onasch, Timothy B. and Massoli, Paola and Kebabian, Paul L. and Hills, Frank B. and Bacon, Fred W. and Freedman, Andrew},
 journal = {Aerosol Science and Technology},
 number = {4}
}

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