Articles | Volume 19, issue 5
Atmos. Chem. Phys., 19, 3325–3339, 2019
https://doi.org/10.5194/acp-19-3325-2019
Atmos. Chem. Phys., 19, 3325–3339, 2019
https://doi.org/10.5194/acp-19-3325-2019

Research article 14 Mar 2019

Research article | 14 Mar 2019

The effect of hydrophobic glassy organic material on the cloud condensation nuclei activity of particles with different morphologies

Ankit Tandon et al.

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Cited articles

Abbatt, J. P. D., Broekhuizen, K., and Pradeep Kumar, P.: Cloud condensation nucleus activity of internally mixed ammonium sulfate/organic acid aerosol particles, Atmos. Environ., 39, 4767–4778, https://doi.org/10.1016/j.atmosenv.2005.04.029, 2005. 
Altaf, M. B. and Freedman, M. A.: Effect of Drying Rate on Aerosol Particle Morphology, J. Phys. Chem. Lett., 8, 3613–3618, https://doi.org/10.1021/acs.jpclett.7b01327, 2017. 
Altaf, M. B., Dutcher, D. D., Raymond, T. M., and Freedman, M. A.: Effect of Particle Morphology on Cloud Condensation Nuclei Activity, ACS Earth Sp. Chem., 2, 634–639, https://doi.org/10.1021/acsearthspacechem.7b00146, 2018. 
Asa-Awuku, A. and Nenes, A.: Effect of solute dissolution kinetics on cloud droplet formation: Extended Köhler theory, J. Geophys. Res., 112, D22201, https://doi.org/10.1029/2005JD006934, 2007. 
Berkemeier, T., Shiraiwa, M., Pöschl, U., and Koop, T.: Competition between water uptake and ice nucleation by glassy organic aerosol particles, Atmos. Chem. Phys., 14, 12513–12531, https://doi.org/10.5194/acp-14-12513-2014, 2014. 
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Organic compounds may form a barrier to condensation. Such barriers have been hypothesized to prevent water and other substances from mixing with salt cores. This will hinder the particles' ability to aid cloud formation of < 100 nm particles. Here we perform experiments encasing particles in plastic shells akin to water bottles. Against expectations, the plastic shell did not alter the droplet activation behavior of the encased particles. Water appears to readily permeate the plastic shell.
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