Articles | Volume 22, issue 19
https://doi.org/10.5194/acp-22-13219-2022
https://doi.org/10.5194/acp-22-13219-2022
Research article
 | 
14 Oct 2022
Research article |  | 14 Oct 2022

A single-parameter hygroscopicity model for functionalized insoluble aerosol surfaces

Chun-Ning Mao, Kanishk Gohil, and Akua A. Asa-Awuku

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Hybrid water adsorption and solubility partitioning for aerosol hygroscopicity and droplet growth
Kanishk Gohil, Chun-Ning Mao, Dewansh Rastogi, Chao Peng, Mingjin Tang, and Akua Asa-Awuku
Atmos. Chem. Phys., 22, 12769–12787, https://doi.org/10.5194/acp-22-12769-2022,https://doi.org/10.5194/acp-22-12769-2022, 2022
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Cited articles

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Dalirian, M., Ylisirniö, A., Buchholz, A., Schlesinger, D., Ström, J., Virtanen, A., and Riipinen, I.: Cloud droplet activation of black carbon particles coated with organic compounds of varying solubility, Atmos. Chem. Phys., 18, 12477–12489, https://doi.org/10.5194/acp-18-12477-2018, 2018. 
Dawson, J. N., Malek, K. A., Razafindrambinina, P. N., Raymond, T. M., Dutcher, D. D., Asa-Awuku, A. A., and Freedman, M. A.: Direct Comparison of the Submicron Aerosol Hygroscopicity of Water-Soluble Sugars, ACS Earth Space Chem., 4, 2215–2226, https://doi.org/10.1021/acsearthspacechem.0c00159, 2020. 
Dusek, U., Frank, G. P., Hildebrandt, L., Curtius, J., Schneider, J., Walter, S., Chand, D., Drewnick, F., Hings, S., Jung, D., Borrmann, S., and Andreae, M. O.: Size matters more than chemistry for cloud-nucleating ability of aerosol particles, Science, 312, 1375–1378, https://doi.org/10.1126/science.1125261, 2006. 
Flory, P. J.: The Thermodynamics of High Polymer Solutions, J. Chem. Phys., 10, 51, https://doi.org/10.1063/1.1723621, 1942. 
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The impact of molecular-level surface chemistry for aerosol water uptake and droplet growth is not well understood. In this work we show changes in water uptake due to molecular-level surface chemistry can be measured and quantified. In addition, we develop a single-parameter model, representing changes in aerosol chemistry that can be used in global climate models to reduce the uncertainty in aerosol-cloud predictions.
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