Articles | Volume 20, issue 21
Atmos. Chem. Phys., 20, 13091–13107, 2020
https://doi.org/10.5194/acp-20-13091-2020
Atmos. Chem. Phys., 20, 13091–13107, 2020
https://doi.org/10.5194/acp-20-13091-2020

Research article 09 Nov 2020

Research article | 09 Nov 2020

Long-term observational constraints of organic aerosol dependence on inorganic species in the southeast US

Yiqi Zheng et al.

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Latest update: 23 Sep 2021
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Short summary
This study aims to address a challenge in biosphere–atmosphere interactions: to what extent can biogenic organic aerosol (OA) be modified through human activities? From three surface network observations, we show OA is weakly dependent on sulfate and aerosol acidity in the summer southeast US, on both long-term trends and monthly variability. The results are in strong contrast to a global model, GEOS-Chem, suggesting the need to revisit the representation of aqueous-phase secondary OA formation.
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