Articles | Volume 23, issue 20
https://doi.org/10.5194/acp-23-12965-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-12965-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
16 Oct 2023
Research article |
| 16 Oct 2023
| 16 Oct 2023
Influence of anthropogenic emissions on the composition of highly oxygenated organic molecules in Helsinki: a street canyon and urban background station comparison
Magdalena Okuljar
CORRESPONDING AUTHOR
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
Olga Garmash
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Department of Atmospheric Sciences, University of Washington, Seattle,
WA, United States
Miska Olin
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Joni Kalliokoski
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Hilkka Timonen
Atmospheric Composition Research, Finnish Meteorological Institute,
00101, Helsinki, Finland
Jarkko V. Niemi
Helsinki Region Environmental Services Authority, HSY, P.O. Box 100,
00066, Helsinki, Finland
Pauli Paasonen
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
Jenni Kontkanen
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
CSC – IT Center for Science Ltd., 02101, Espoo, Finland
Yanjun Zhang
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
IRCELYON, University of Lyon, Université Claude Bernard Lyon 1, CNRS,69626 Villeurbanne, France
Heidi Hellén
Atmospheric Composition Research, Finnish Meteorological Institute,
00101, Helsinki, Finland
Heino Kuuluvainen
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Minna Aurela
Atmospheric Composition Research, Finnish Meteorological Institute,
00101, Helsinki, Finland
Hanna E. Manninen
Helsinki Region Environmental Services Authority, HSY, P.O. Box 100,
00066, Helsinki, Finland
Mikko Sipilä
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
Topi Rönkkö
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Tuukka Petäjä
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
Markku Kulmala
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
Miikka Dal Maso
Aerosol Physics Laboratory, Physics Unit, Tampere University, P.O. Box
692, 33014, Tampere, Finland
Mikael Ehn
Institute of Atmospheric and Earth System Science/Physics, University of Helsinki, 00014, Helsinki,
Finland
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Cited
Latest update: 08 May 2024
Short summary
Highly oxygenated organic molecules (HOMs) form secondary organic aerosol that affects air quality and health. In this study, we demonstrate that in a moderately polluted city with abundant vegetation, the composition of HOMs is largely controlled by the effect of NOx on the biogenic volatile organic compound oxidation. Comparing the results from two nearby stations, we show that HOM composition and formation pathways can change considerably within small distances in urban environments.
Highly oxygenated organic molecules (HOMs) form secondary organic aerosol that affects air...
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