Articles | Volume 14, issue 5
Atmos. Meas. Tech., 14, 3707–3719, 2021
https://doi.org/10.5194/amt-14-3707-2021

Special issue: Satellite and ground-based remote sensing of aerosol optical,...

Atmos. Meas. Tech., 14, 3707–3719, 2021
https://doi.org/10.5194/amt-14-3707-2021

Research article 21 May 2021

Research article | 21 May 2021

Modeled source apportionment of black carbon particles coated with a light-scattering shell

Aki Virkkula

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Latest update: 29 Jul 2021
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Short summary
The Aethalometer model is used widely for estimating the contributions of fossil fuel emissions and biomass burning to black carbon. The calculation is based on measured absorption Ångström exponents, which is ambiguous since it not only depends on the dominant absorber but also on the size and internal structure of the particles, core size, and shell thickness. The uncertainties of the fractions of absorption by eBC from fossil fuel and biomass burning are evaluated with a core–shell Mie model.