Articles | Volume 20, issue 5
Atmos. Chem. Phys., 20, 3249–3258, 2020
https://doi.org/10.5194/acp-20-3249-2020
Atmos. Chem. Phys., 20, 3249–3258, 2020
https://doi.org/10.5194/acp-20-3249-2020

Research article 18 Mar 2020

Research article | 18 Mar 2020

Aerosol pH and liquid water content determine when particulate matter is sensitive to ammonia and nitrate availability

Athanasios Nenes et al.

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AR by Athanasios Nenes on behalf of the Authors (04 Jan 2020)  Author's response    Manuscript
ED: Publish as is (13 Jan 2020) by Veli-Matti Kerminen
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Short summary
We show that aerosol acidity (pH) and liquid water content naturally emerge as previously ignored parameters that drive particulate matter formation in the atmosphere, and its sensitivity to emissions of ammonia and nitric acid. The simple framework presented is easily applied to ambient measurements or model output, and it provides the chemical regime of PM sensitivity to ammonia and nitric acid availability.
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