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Anthropogenic and b...
Anthropogenic and biogenic influence on VOC fluxes at an urban background site in Helsinki, Finland
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- Rantala, Pekka (author)
- University of Helsinki
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- Järvi, Leena (author)
- University of Helsinki
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- Taipale, Risto (author)
- University of Helsinki
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- Laurila, Terhi (author)
- University of Helsinki
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- Patokoski, Johanna (author)
- University of Helsinki
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- Kajos, Maija (author)
- University of Helsinki
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- Kurppa, Mona (author)
- University of Helsinki
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- Haapanala, Sami (author)
- University of Helsinki
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- Siivola, Erkki (author)
- University of Helsinki
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- Petäjä, Tuukka (author)
- University of Helsinki
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- Ruuskanen, Taina (author)
- University of Helsinki
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- Rinne, Janne (author)
- Lund University,Lunds universitet,Institutionen för naturgeografi och ekosystemvetenskap,Naturvetenskapliga fakulteten,Dept of Physical Geography and Ecosystem Science,Faculty of Science,Finnish Meteorological Institute,University of Helsinki
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(creator_code:org_t)
- 2016-07-01
- 2016
- English 27 s.
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In: Atmospheric Chemistry and Physics. - : Copernicus GmbH. - 1680-7324. ; 16:12, s. 7981-8007
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Abstract
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- We measured volatile organic compounds (VOCs), carbon dioxide (CO2) and carbon monoxide (CO) at an urban background site near the city centre of Helsinki, Finland, northern Europe. The VOC and CO2 measurements were obtained between January 2013 and September 2014 whereas for CO a shorter measurement campaign in April–May 2014 was conducted. Both anthropogenic and biogenic sources were identified for VOCs in the study. Strong correlations between VOC fluxes and CO fluxes and traffic rates indicated anthropogenic source of many VOCs. The VOC with the highest emission rate to the atmosphere was methanol, which originated mostly from traffic and other anthropogenic sources. The traffic was also a major source for aromatic compounds in all seasons whereas isoprene was mostly emitted from biogenic sources during summer. Some amount of traffic-related isoprene emissions were detected during other seasons but this might have also been an instrumental contamination from cycloalkane products. Generally, the observed VOC fluxes were found to be small in comparison with previous urban VOC flux studies. However, the differences were probably caused by lower anthropogenic activities as the CO2 fluxes were also relatively small at the site.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Rantala, Pekka
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Järvi, Leena
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Taipale, Risto
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Laurila, Terhi
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Patokoski, Johan ...
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Kajos, Maija
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show more...
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Kurppa, Mona
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Haapanala, Sami
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Siivola, Erkki
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Petäjä, Tuukka
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Ruuskanen, Taina
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Rinne, Janne
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
- Articles in the publication
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Atmospheric Chem ...
- By the university
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Lund University