Articles | Volume 21, issue 8
Atmos. Chem. Phys., 21, 6023–6033, 2021
https://doi.org/10.5194/acp-21-6023-2021
Atmos. Chem. Phys., 21, 6023–6033, 2021
https://doi.org/10.5194/acp-21-6023-2021

Research article 22 Apr 2021

Research article | 22 Apr 2021

Aerosol acidity and liquid water content regulate the dry deposition of inorganic reactive nitrogen

Athanasios Nenes et al.

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AR by Athanasios Nenes on behalf of the Authors (02 Mar 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (04 Mar 2021) by Veli-Matti Kerminen
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Short summary
Ecosystems and air quality are affected by the dry deposition of inorganic reactive nitrogen (Nr, the sum of ammonium and nitrate). Its large variability is driven by the large difference in deposition velocity of N when in the gas or particle phase. Here we show that aerosol liquid water and acidity, by affecting gas–particle partitioning, modulate the dry deposition velocity of NH3, HNO3, and Nr worldwide. These effects explain the rapid accumulation of nitrate aerosol during haze events.
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