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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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We conducted the first simultaneous measurements of size-resolved particle number concentrations at ground level and 260 m in urban Beijing. The vertical differences strongly depend on particle sizes, with accumulation-mode particles being highly correlated at the two heights. We further demonstrated that regional emission controls have a dominant impact on accumulation-mode particles, while the influences on Aitken particles were much smaller due to the enhanced NPF events.
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Articles | Volume 17, issue 11
Atmos. Chem. Phys., 17, 6797–6811, 2017
https://doi.org/10.5194/acp-17-6797-2017

Special issue: Regional transport and transformation of air pollution in...

Atmos. Chem. Phys., 17, 6797–6811, 2017
https://doi.org/10.5194/acp-17-6797-2017

Research article 09 Jun 2017

Research article | 09 Jun 2017

Simultaneous measurements of particle number size distributions at ground level and 260 m on a meteorological tower in urban Beijing, China

Wei Du et al.

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Latest update: 20 Jan 2021
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Short summary
We conducted the first simultaneous measurements of size-resolved particle number concentrations at ground level and 260 m in urban Beijing. The vertical differences strongly depend on particle sizes, with accumulation-mode particles being highly correlated at the two heights. We further demonstrated that regional emission controls have a dominant impact on accumulation-mode particles, while the influences on Aitken particles were much smaller due to the enhanced NPF events.
Citation
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Final-revised paper
Preprint