Articles | Volume 14, issue 6
https://doi.org/10.5194/amt-14-4053-2021
https://doi.org/10.5194/amt-14-4053-2021
Research article
 | 
03 Jun 2021
Research article |  | 03 Jun 2021

Highly time-resolved characterization of carbonaceous aerosols using a two-wavelength Sunset thermal–optical carbon analyzer

Mengying Bao, Yan-Lin Zhang, Fang Cao, Yu-Chi Lin, Yuhang Wang, Xiaoyan Liu, Wenqi Zhang, Meiyi Fan, Feng Xie, Robert Cary, Joshua Dixon, and Lihua Zhou

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Cited articles

Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006. 
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. 
Bao, M.: Highly time-resolved characterization of carbonaceous aerosols using a two-wavelength Sunset thermal-optical carbon analyzer, OSF, https://doi.org/10.17605/OSF.IO/MA8CU, 2021. 
Bao, M., Cao, F., Chang, Y., Zhang, Y.-L., Gao, Y., Liu, X., Zhang, Y., Zhang, W., Tang, T., Xu, Z., Liu, S., Lee, X., Li, J., and Zhang, G.: Characteristics and origins of air pollutants and carbonaceous aerosols during wintertime haze episodes at a rural site in the Yangtze River Delta, China, Atmos. Pollut. Res., 8, 900–911, https://doi.org/10.1016/j.apr.2017.03.001, 2017. 
Bhattaraia, H., Saikawac, E., Wana, X., Zhue, H., Ram, K., Gao, S., Kang, S., Zhanga, Q., Zhang, Y., Wu, G., Wang, X., Kawamura, K., Fui, P., and Cong, Z.: Levoglucosan as a tracer of biomass burning recent progress and perspectives, Atmos. Res., 220, 20–33, https://doi.org/10.1016/j.atmosres.2019.01.004, 2019. 
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Short summary
We introduce a two-wavelength method for brown C measurements with a modified Sunset carbon analyzer. We defined the enhanced concentrations and gave the possibility of providing an indicator of brown C. Compared with the strong local sources of organic and elemental C, we found that differences in EC mainly originated from regional transport. Biomass burning emissions significantly contributed to high differences in EC concentrations during the heavy biomass burning periods.