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ACP | Articles | Volume 19, issue 9
Atmos. Chem. Phys., 19, 6185–6203, 2019
https://doi.org/10.5194/acp-19-6185-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 19, 6185–6203, 2019
https://doi.org/10.5194/acp-19-6185-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 09 May 2019

Research article | 09 May 2019

Regional new particle formation as modulators of cloud condensation nuclei and cloud droplet number in the eastern Mediterranean

Panayiotis Kalkavouras et al.

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Albrecht, B. A.: Observations of cloudy boundary layers, Chapter 8, Verhandelingen Natuurkunde, Eerste Reeks, deel, 48, 179–198, 1998. 
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Barahona, D., West, R. E. L., Stier, P., Romakkaniemi, S., Kokkola, H., and Nenes, A.: Comprehensively accounting for the effect of giant CCN in cloud activation parameterizations, Atmos. Chem. Phys., 10, 2467–2473, https://doi.org/10.5194/acp-10-2467-2010, 2010. 
Bardouki, H., Liakakou, H., Economou, C., Sciare, J., Smolík, J., Ždímal, V., Eleftheriadis, K., Lazaridis, M., Dyef, C., and Mihalopoulos, N.: Chemical composition of size-resolved atmospheric aerosols in the eastern Mediterranean during summer and winter, Atmos. Environ., 37, 195–208, https://doi.org/10.1016/S1352-2310(02)00859-2, 2003. 
Bates, T. S., Charlson, R. J., and Gammon, R. H.: Evidence for the climatic role of marine biogenic sulphur, Nature 329, 319–321, https://doi.org/10.1038/329319a0, 1987. 
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We study how new particle formation (NPF) events affect clouds throughout the year at a ground site in the E Mediterranean. Using a new tools and evaluation metrics, NPF is found to affect only evening and nocturnal clouds by modestly increasing droplet number by 7 to 12 %. A conventional analysis based on CCN concentration at prescribed supersaturation levels or aerosol size can considerably bias the perceived influence of NPF events on regional clouds, the hydrological cycle, and climate.
We study how new particle formation (NPF) events affect clouds throughout the year at a ground...
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