Potential dual effect of anthropogenic emissions on the formation of biogenic secondary organic aerosol (BSOA)

Kari, Eetu; Hao, Liqing; Ylisirniö, Arttu; Buchholz, Angela; Leskinen, Ari; Yli-Pirilä, Pasi; Nuutinen, Ilpo; Kuuspalo, Kari; Jokiniemi, Jorma; Faiola, Celia L.; Schobesberger, Siegfried; Virtanen, Annele

doi:10.5194/acp-19-15651-2019

Articles | Volume 19, issue 24

https://doi.org/10.5194/acp-19-15651-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Simulation chambers as tools in atmospheric research (AMT/ACP/GMD...

https://doi.org/10.5194/acp-19-15651-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 24

Research article

|

20 Dec 2019

Research article |

| 20 Dec 2019

Potential dual effect of anthropogenic emissions on the formation of biogenic secondary organic aerosol (BSOA)

Eetu Kari, Liqing Hao, Arttu Ylisirniö, Angela Buchholz, Ari Leskinen, Pasi Yli-Pirilä, Ilpo Nuutinen, Kari Kuuspalo, Jorma Jokiniemi, Celia L. Faiola, Siegfried Schobesberger, and Annele Virtanen

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Short summary

We present, for the first time, the dual effect of GDI-vehicle exhaust on α-pinene SOA mass yield suppression. The first effect is a well-known NOx effect, but the second effect is more complex. Our results imply that this second effect is related to change of reaction pathways of α-pinene in the presence of GDI exhaust. The presence of vehicle exhaust caused more than 50 % suppression in α-pinene SOA mass yield compared to the α-pinene SOA mass yield measured in the absence of GDI emissions.


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