Articles | Volume 16, issue 13
Atmos. Chem. Phys., 16, 8095–8108, 2016
https://doi.org/10.5194/acp-16-8095-2016
Atmos. Chem. Phys., 16, 8095–8108, 2016
https://doi.org/10.5194/acp-16-8095-2016

Research article 04 Jul 2016

Research article | 04 Jul 2016

Evidence for ambient dark aqueous SOA formation in the Po Valley, Italy

Amy P. Sullivan et al.

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This paper presents the results from our measurements and approach for the investigation of aqueous secondary organic aerosol (aqSOA) formation in the ambient atmosphere. When local aqSOA formation was observed, a correlation of water-soluble organic carbon with organic aerosol, aerosol liquid water, relative humidity, and aerosol nitrate was found. Key factors of local aqSOA production include air mass stagnation, formation of local nitrate overnight, and significant amounts of ammonia.
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