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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Cited articles

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Arola, A., Schuster, G., Myhre, G., Kazadzis, S., Dey, S., and Tripathi, S. N.: Inferring absorbing organic carbon content from AERONET data, Atmos. Chem. Phys., 11, 215–225, https://doi.org/10.5194/acp-11-215-2011, 2011. 
Arshanitsa, A., Akishin, Y., Zile, E., Dizhbite, T., Solodovnik, V., and Telysheva, G.: Microwave treatment combined with conventional heating of plant biomass pellets in a rotated reactor as a high rate process for solid biofuel manufacture, Renew. Energ., 91, 386–396, https://doi.org/10.1016/j.renene.2016.01.080, 2016. 
Aurell, J. and Gullett, B. K.: Emission factors from aerial and ground measurements of field and laboratory forest burns in the southeastern US: PM2.5, black and brown carbon, VOC, and PCDD/PCDF, Environ. Sci. Technol., 47, 8443–8452, https://doi.org/10.1021/es402101k, 2013. 
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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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