Articles | Volume 19, issue 23
Atmos. Chem. Phys., 19, 14849–14873, 2019
https://doi.org/10.5194/acp-19-14849-2019
Atmos. Chem. Phys., 19, 14849–14873, 2019
https://doi.org/10.5194/acp-19-14849-2019

Research article 10 Dec 2019

Research article | 10 Dec 2019

On the seasonal variation in observed size distributions in northern Europe and their changes with decreasing anthropogenic emissions in Europe: climatology and trend analysis based on 17 years of data from Aspvreten, Sweden

Peter Tunved and Johan Ström

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Cited articles

Beddows, D. C. S., Dall'Osto, M., and Harrison, R. M.: Cluster Analysis of Rural, Urban, and Curbside Atmospheric Particle Size Data, Environ. Sci. Technol., 43, 4694–4700, https://doi.org/10.1021/es803121t, 2009. 
Boy, M., Kulmala, M., Ruuskanen, T. M., Pihlatie, M., Reissell, A., Aalto, P. P., Keronen, P., Dal Maso, M., Hellen, H., Hakola, H., Jansson, R., Hanke, M., and Arnold, F.: Sulphuric acid closure and contribution to nucleation mode particle growth, Atmos. Chem. Phys., 5, 863–878, https://doi.org/10.5194/acp-5-863-2005, 2005. 
Burkley, J.: A non-parametric monotonic trend test computing Mann-Kendall Tau, Tau-b, and Sen's Slope written in Mathworks-MATLAB implemented using matrix rotations, King County, Department of Natural Resources and Parks, Science and Technical Services section, Seattle, Washington, USA, available at: http://www.mathworks.com/matlabcentral/fileexchange/authors/23983 (last access: 1 December 2019), 2006. 
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Short summary
In this study we explore 17 years of aerosol number size distribution data (10–390 nm) observed at Aspvreten (58.8° N, 17.4° E, 25 m a.s.l.). The station, located in northern Europe, is representative of rural background conditions. The study focused on identifying trends in aerosol number size distribution properties. The study shows that total number has decreased by 30 % and aerosol submicron mass by 50 % on average. Observed trends vary strongly with both season and particle size.
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