Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
Articles | Volume 21, issue 21
Articles | Volume 21, issue 21
Atmos. Chem. Phys., 21, 16093–16120, 2021
https://doi.org/10.5194/acp-21-16093-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 21, 16093–16120, 2021
https://doi.org/10.5194/acp-21-16093-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 21
Research article
02 Nov 2021
Research article | 02 Nov 2021

Influence of atmospheric in-cloud aqueous-phase chemistry on the global simulation of SO2 in CESM2

Wendong Ge et al.

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Short summary
Compared with the observations, the results incorporating detailed cloud aqueous-phase chemistry greatly reduced SO2 overestimation. The biases in annual simulated SO2 concentrations (or mixing ratios) decreased by 46 %, 41 %, and 22 % in Europe, the USA, and China, respectively. Fe chemistry and HOx chemistry contributed more to SO2 oxidation than N chemistry. Higher concentrations of soluble Fe and higher pH values could further enhance the oxidation capacity.
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