Articles | Volume 21, issue 4
Atmos. Chem. Phys., 21, 2329–2341, 2021
https://doi.org/10.5194/acp-21-2329-2021
Atmos. Chem. Phys., 21, 2329–2341, 2021
https://doi.org/10.5194/acp-21-2329-2021

Research article 17 Feb 2021

Research article | 17 Feb 2021

Brown carbon's emission factors and optical characteristics in household biomass burning: developing a novel algorithm for estimating the contribution of brown carbon

Jianzhong Sun et al.

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Latest update: 23 Sep 2021
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Short summary
Brown carbon (BrC) emission factors from household biomass fuels were measured with an integrating sphere optics approach supported by iterative calculations. A novel algorithm to directly estimate the absorption contribution of BrC relative to that of BrC + black carbon (FBrC) was proposed based purely on the absorption exponent (AAE) (FBrC = 0.5519 lnAAE + 0.0067). The FBrC for household biomass fuels was as high as 50.8 % across the strongest solar spectral range of 350−850 nm.
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