Articles | Volume 16, issue 22
Atmos. Chem. Phys., 16, 14635–14656, 2016
Atmos. Chem. Phys., 16, 14635–14656, 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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Subject: Clouds and Precipitation | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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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,, 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,, 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,, 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,, 2012.
Andreae, M. O.: The aerosol nucleation puzzle, Science, 339, 911–912,, 2013.
Short summary
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.
Final-revised paper