Articles | Volume 9, issue 1
https://doi.org/10.5194/gmd-9-111-2016
https://doi.org/10.5194/gmd-9-111-2016
Model description paper
 | 
19 Jan 2016
Model description paper |  | 19 Jan 2016

Prediction of cloud condensation nuclei activity for organic compounds using functional group contribution methods

M. D. Petters, S. M. Kreidenweis, and P. J. Ziemann

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Short summary
Organic particles suspended in air serve as nucleation seeds for droplets in atmospheric clouds. Over time their chemical composition changes towards more functionalized compounds. This work presents a model that can predict an organic compounds' ability promote the nucleation of cloud drops from its functional group composition. Hydroxyl, carboxyl, aldehyde, hydroperoxide, carbonyl, and ether moieties promote droplet nucleation. Methylene and nitrate moieties inhibit droplet nucleation.