Articles | Volume 17, issue 6
Atmos. Chem. Phys., 17, 4229–4249, 2017
https://doi.org/10.5194/acp-17-4229-2017
Atmos. Chem. Phys., 17, 4229–4249, 2017
https://doi.org/10.5194/acp-17-4229-2017

Research article 29 Mar 2017

Research article | 29 Mar 2017

Evaluation of the absorption Ångström exponents for traffic and wood burning in the Aethalometer-based source apportionment using radiocarbon measurements of ambient aerosol

Peter Zotter et al.

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Latest update: 25 Jul 2021
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Short summary
Most studies use a single Ångström exponent for wood burning (αWB) and traffic (αTR) emissions in the Aethalometer model, used for source apportionment of black carbon, derived from previous work. However, accurate determination of the α values is currently lacking. Comparing radiocarbon measurements (14C) with the Aehtalometer model, good agreement was found, indicating that the Aethalometer model reproduces reasonably well the 14C results using our best estimate of a single αWB and αTR.
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