Articles | Volume 22, issue 17
https://doi.org/10.5194/acp-22-11529-2022
https://doi.org/10.5194/acp-22-11529-2022
Research article
 | 
07 Sep 2022
Research article |  | 07 Sep 2022

The effectiveness of the coagulation sink of 3–10 nm atmospheric particles

Runlong Cai, Ella Häkkinen, Chao Yan, Jingkun Jiang, Markku Kulmala, and Juha Kangasluoma

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Cited articles

Alam, M. K.: The Effect of van der Waals and Viscous Forces on Aerosol Coagulation, Aerosol Sci. Tech., 6, 41–52, https://doi.org/10.1080/02786828708959118, 1987. 
Cai, R.: Data for The effectiveness of coagulation sink of 3–10 nm atmospheric particles, Zenodo [data set], https://doi.org/10.5281/zenodo.6982767. 2022. 
Cai, R. and Jiang, J.: A new balance formula to estimate new particle formation rate: reevaluating the effect of coagulation scavenging, Atmos. Chem. Phys., 17, 12659–12675, https://doi.org/10.5194/acp-17-12659-2017, 2017. 
Cai, R., Chen, D.-R., Hao, J., and Jiang, J.: A miniature cylindrical differential mobility analyzer for sub-3 nm particle sizing, J. Aerosol Sci., 106, 111–119, https://doi.org/10.1016/j.jaerosci.2017.01.004, 2017a. 
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Short summary
The influences of new particle formation on the climate and air quality are governed by particle survival, which has been under debate due to uncertainties in the coagulation sink. Here we measure the coagulation coefficient of sub-10 nm particles and demonstrate that collisions between the freshly nucleated and background particles can effectively lead to coagulation. We further show that the effective coagulation sink is consistent with the new particle formation measured in urban Beijing.
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