Articles | Volume 16, issue 22
Atmos. Chem. Phys., 16, 14635–14656, 2016
https://doi.org/10.5194/acp-16-14635-2016
Atmos. Chem. Phys., 16, 14635–14656, 2016
https://doi.org/10.5194/acp-16-14635-2016
Research article
24 Nov 2016
Research article | 24 Nov 2016

Effect of vehicular traffic, remote sources and new particle formation on the activation properties of cloud condensation nuclei in the megacity of São Paulo, Brazil

Carlos Eduardo Souto-Oliveira et al.

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Cited articles

Almeida, G. P., Brito, J., Morales, C. A., Andrade, M. F., and Artaxo, P.: Measured and modelled cloud condensation nuclei (CCN) concentration in São Paulo, Brazil: the importance of aerosol size-resolved chemical composition on CCN concentration prediction, Atmos. Chem. Phys., 14, 7559–7572, https://doi.org/10.5194/acp-14-7559-2014, 2014.
An, J., Wang, H., Shen, L., Zhu, B., Zou, J., Gao, J., and Kang, H.: Characteristics of new particle formation events in Nanjing, China: Effect of water-soluble ions, Atmos. Environ., 108, 32–40, https://doi.org/10.1016/j.atmosenv.2015.01.038, 2015.
Andrade, M. F., Orsini, C., and Maenhaut, W.: Relation between aerosol sources and meteorological parameters for inhalable atmospheric particles in Sao Paulo City, Brazil, Atmos. Environ., 28, 2307–2315, https://doi.org/10.1016/1352-2310(94)90484-7, 1994.
Andrade, M. F., De Miranda, R. M., Fornaro, A., Kerr, A., Oyama, B., De Andre, P. A., and Saldiva, P.: Vehicle emissions and PM2.5 mass concentrations in six Brazilian cities, Air Qual. Atmos. Health, 5, 79–88, https://doi.org/10.1007/s11869-010-0104-5, 2012.
Andreae, M. O.: The aerosol nucleation puzzle, Science, 339, 911–912, https://doi.org/10.1126/science.1233798, 2013.
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The Metropolitan Area of São Paulo is the biggest megacity of South America, with over 20 million inhabitants. In recent years, the region has been facing a modification in rain patterns. In this study, we evaluated the effects of local and remote sources of air pollution on cloud-condensation nuclei activation properties. Our results showed that the local vehicular traffic emission products presented more negative effects on cloud-condensation nuclei activation than the remote sources.
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