Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 7149–7170, 2021
https://doi.org/10.5194/acp-21-7149-2021
Atmos. Chem. Phys., 21, 7149–7170, 2021
https://doi.org/10.5194/acp-21-7149-2021

Research article 11 May 2021

Research article | 11 May 2021

Trends, composition, and sources of carbonaceous aerosol at the Birkenes Observatory, northern Europe, 2001–2018

Karl Espen Yttri et al.

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Short summary
Carbonaceous aerosol sources and trends were studied at the Birkenes Observatory. A large decrease in elemental carbon (EC; 2001–2018) and a smaller decline in levoglucosan (2008–2018) suggest that organic carbon (OC)/EC from traffic/industry is decreasing, whereas the abatement of OC/EC from biomass burning has been less successful. Positive matrix factorization apportioned 72 % of EC to fossil fuel sources and 53 % (PM2.5) and 78 % (PM10–2.5) of OC to biogenic sources.
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