Articles | Volume 18, issue 19
https://doi.org/10.5194/acp-18-14017-2018
https://doi.org/10.5194/acp-18-14017-2018
Research article
 | 
02 Oct 2018
Research article |  | 02 Oct 2018

Molecular and physical characteristics of aerosol at a remote free troposphere site: implications for atmospheric aging

Simeon K. Schum, Bo Zhang, Katja Džepina, Paulo Fialho, Claudio Mazzoleni, and Lynn R. Mazzoleni

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Cited articles

Aggarwal, S. G. and Kawamura, K.: Carbonaceous and inorganic composition in long-range transported aerosols over northern Japan: Implication for aging of water-soluble organic fraction, Atmos. Env., 43, 2532–2540, https://doi.org/10.1016/j.atmosenv.2009.02.032, 2009. 
Arangio, A. M., Slade, J. H., Berkemeier, T., Pöschl, U., Knopf, D. A., and Shiraiwa, M.: Multiphase Chemical Kinetics of OH Radical Uptake by Molecular Organic Markers of Biomass Burning Aerosols: Humidity and Temperature Dependence, Surface Reaction, and Bulk Diffusion, J. Phys. Chem., 119, 4533–4544, https://doi.org/10.1021/jp510489z , 2015. 
Bao, H., Niggemann, J., Luo, L., Dittmar, T., and Kao, S.: Aerosols as a source of dissolved black carbon to the ocean, Nat. Commun., 8, 1–7, https://doi.org/10.1038/s41467-017-00437-3, 2017. 
Berkemeier, T., Shiraiwa, M., Pöschl, U., and Koop, T.: Competition between water uptake and ice nucleation by glassy organic aerosol particles, Atmos. Chem. Phys., 14, 12513–12531, https://doi.org/10.5194/acp-14-12513-2014, 2014. 
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This paper presents the detailed molecular composition of free tropospheric aerosol. We studied three pollution events with different origins and residence times and observed differences in the molecular composition pertaining to the atmospheric oxidation. The results indicated that the transport pathways contributed to the observed differences and imply that emissions injected into the free troposphere are longer-lived than those in the boundary layer.
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