Articles | Volume 18, issue 16
https://doi.org/10.5194/acp-18-12141-2018
https://doi.org/10.5194/acp-18-12141-2018
Research article
 | 
22 Aug 2018
Research article |  | 22 Aug 2018

Measurement and modeling of the multiwavelength optical properties of uncoated flame-generated soot

Sara D. Forestieri, Taylor M. Helgestad, Andrew T. Lambe, Lindsay Renbaum-Wolff, Daniel A. Lack, Paola Massoli, Eben S. Cross, Manvendra K. Dubey, Claudio Mazzoleni, Jason S. Olfert, Arthur J. Sedlacek III, Andrew Freedman, Paul Davidovits, Timothy B. Onasch, and Christopher D. Cappa

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Latest update: 24 Dec 2024
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Short summary
We characterized optical properties of flame-derived black carbon particles and interpret our observations through the use of Mie theory and Rayleigh–Debye–Gans theory. We determined that the mass absorption coefficient is independent of particle collapse and use this to derive theory- and wavelength-specific refractive indices for black carbon (BC). We demonstrate the inadequacy of Mie theory and suggest an alternative approach for atmospheric models to better represent light absorption by BC.
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