Impact of anthropogenic and biogenic sources on the seasonal variation in the molecular composition of urban organic  aerosols: a field and laboratory study using ultra-high-resolution mass spectrometry

Daellenbach, Kaspar R.; Kourtchev, Ivan; Vogel, Alexander L.; Bruns, Emily A.; Jiang, Jianhui; Petäjä, Tuukka; Jaffrezo, Jean-Luc; Aksoyoglu, Sebnem; Kalberer, Markus; Baltensperger, Urs; El Haddad, Imad; Prévôt, André S. H.

doi:https://doi.org/10.5194/acp-19-5973-2019

Articles | Volume 19, issue 9

https://doi.org/10.5194/acp-19-5973-2019

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

https://doi.org/10.5194/acp-19-5973-2019

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

Articles | Volume 19, issue 9

Research article

|

07 May 2019

Research article |

| 07 May 2019

Impact of anthropogenic and biogenic sources on the seasonal variation in the molecular composition of urban organic aerosols: a field and laboratory study using ultra-high-resolution mass spectrometry

Kaspar R. Daellenbach, Ivan Kourtchev, Alexander L. Vogel, Emily A. Bruns, Jianhui Jiang, Tuukka Petäjä, Jean-Luc Jaffrezo, Sebnem Aksoyoglu, Markus Kalberer, Urs Baltensperger, Imad El Haddad, and André S. H. Prévôt

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Impact of anthropogenic and biogenic sources on the seasonal variation of the molecular composition of urban organic aerosol: a field and laboratory study using ultra-high resolution mass spectrometry', Anonymous Referee #1, 27 Dec 2018
- AC1: 'response to reviewer 1', Kaspar Rudolf Dällenbach, 12 Mar 2019
RC2: 'Referee comments', Anonymous Referee #2, 29 Jan 2019
- AC2: 'response to reviewer 2', Kaspar Rudolf Dällenbach, 12 Mar 2019

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AR: Author's response | RR: Referee report | ED: Editor decision

AR by Kaspar Rudolf Dällenbach on behalf of the Authors (12 Mar 2019) Manuscript

ED: Publish as is (22 Mar 2019) by Annele Virtanen

AR by Kaspar Rudolf Dällenbach on behalf of the Authors (27 Mar 2019)

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Short summary

Here we present the molecular composition of the organic aerosol (OA) at an urban site in Central Europe (Zurich, Switzerland) and compare it to smog chamber wood smoke and ambient biogenic secondary OA (SOA) (Orbitrap analyses). Accordingly, we are able to explain the strong seasonality of the molecular composition by aged wood smoke and biogenic SOA during winter and summer. Our results could also explain the predominance of non-fossil organic carbon at European locations throughout the year.