Articles | Volume 16, issue 8
Atmos. Chem. Phys., 16, 4817–4835, 2016
https://doi.org/10.5194/acp-16-4817-2016
Atmos. Chem. Phys., 16, 4817–4835, 2016
https://doi.org/10.5194/acp-16-4817-2016

Research article 19 Apr 2016

Research article | 19 Apr 2016

Modeling and measurements of urban aerosol processes on the neighborhood scale in Rotterdam, Oslo and Helsinki

Matthias Karl et al.

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AR by Matthias Karl on behalf of the Authors (23 Mar 2016)  Author's response    Manuscript
ED: Publish subject to technical corrections (01 Apr 2016) by Rob MacKenzie
AR by Matthias Karl on behalf of the Authors (07 Apr 2016)  Author's response    Manuscript
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Short summary
Particles emitted from road traffic are subject to complex dilution processes as well as microphysical transformation processes. Particle measurements at major roads in Rotterdam, Oslo and Helsinki were used to analyze the relevance of microphysical transformation processes. Transformation processes caused changes of the particle number concentration of up to 20–30 % on the neighborhood scale. A simple parameterization to predict particle number concentrations in urban areas is presented.
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