Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 7409–7427, 2021
https://doi.org/10.5194/acp-21-7409-2021
Atmos. Chem. Phys., 21, 7409–7427, 2021
https://doi.org/10.5194/acp-21-7409-2021

Research article 17 May 2021

Research article | 17 May 2021

Secondary aerosol formation alters CCN activity in the North China Plain

Jiangchuan Tao et al.

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Latest update: 16 Oct 2021
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Short summary
The mechanism of secondary aerosol (SA) formation can be affected by relative humidity (RH) and has different influences on the particle CCN activity under different RH conditions. In the North China Plain, we find different responses of CCN activity and enhancements of CCN number concentration to SA formation under different RH conditions. In addition, variations of aerosol mixing state due to SA formation contribute some of the largest uncertainties in predicting CCN number concentration.
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