Articles | Volume 22, issue 7
Atmos. Chem. Phys., 22, 4969–4984, 2022
https://doi.org/10.5194/acp-22-4969-2022
Atmos. Chem. Phys., 22, 4969–4984, 2022
https://doi.org/10.5194/acp-22-4969-2022
Research article
14 Apr 2022
Research article | 14 Apr 2022

Kinetics of OH + SO2 + M: temperature-dependent rate coefficients in the fall-off regime and the influence of water vapour

Wenyu Sun et al.

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Cited articles

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The reaction between OH and SO2 is a termolecular process that in the atmosphere results in the formation of H2SO4 and thus aerosols. We present the first temperature- and pressure-dependent measurements of the rate coefficients in N2. This is also the first study to examine the effects of water vapour on the kinetics of this reaction. Our results indicate the rate coefficient is larger than that recommended by evaluation panels, with deviations of up to 30 % in some parts of the atmosphere.
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