2021
DOI: 10.1021/acs.est.0c06496
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Multiphase Oxidation of Sulfur Dioxide in Aerosol Particles: Implications for Sulfate Formation in Polluted Environments

Abstract: Atmospheric oxidation of sulfur dioxide (SO2) forms sulfate-containing aerosol particles that impact air quality, climate, and human and ecosystem health. It is well-known that in-cloud oxidation of SO2 frequently dominates over gas-phase oxidation on regional and global scales. Multiphase oxidation involving aerosol particles, fog, and cloud droplets has been generally thought to scale with liquid water content (LWC) so multiphase oxidation would be negligible for aerosol particles due to their low aerosol LW… Show more

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Cited by 135 publications
(142 citation statements)
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“…For SO 4 2− and NO 3 − , the model also tended to underestimate the observed concentrations, but in most cases it was judged to have performed well within the criteria. The model's underestimation for SO 4 2− was due to the insu cient oxidation process in the current modeling20 . See our previous work for several possible reasons of the…”
mentioning
confidence: 76%
“…For SO 4 2− and NO 3 − , the model also tended to underestimate the observed concentrations, but in most cases it was judged to have performed well within the criteria. The model's underestimation for SO 4 2− was due to the insu cient oxidation process in the current modeling20 . See our previous work for several possible reasons of the…”
mentioning
confidence: 76%
“…These HOBr-sulfur(IV) reactions are critical in moderating tropospheric BrO in the mid latitudes (Zhu et al, 2019). In GEOS-Chem 12.9 the halogen chemical mechanism was modified extensively to include chlorine chemistry as detailed in Wang et al (2019b) with update halogen-sulfur (IV) rates (Liu et al, 2021) as well as improved cloud pH calculation from Shah et al (2020). For the simulations here, GEOS-Chem uses the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) assimilated meteorological fields (Gelaro et al, 2017) re-gridded from native resolution of 0.5°x0.625° latitude and longitude to 2°x2.5° using a reduced vertical grid of 47 layers.…”
Section: Diurnal Yield Of Br2 On Ozone Depositionmentioning
confidence: 99%
“…(Carmichael and Peters, 1979;Zhang et al, 2013;Terraglio and Manganelli, 1967). Factors including liquid water content, aerosol composition, aerosol loading, and pH of the water are important in determining adsorption and oxidation rate of SO2 (Liu et al, 2021). With increased humidity and presence of a filter, SO2 gas is likely adsorbing on the filter causing lower SO2 transmission efficiency due to potential uptake of SO2 in water on the filter.…”
Section: Post Field Test Improvements and Laboratory Testingmentioning
confidence: 99%
“…A second field deployment to Hawai'i followed immediately after the deployment to Canada. On May 3, 2018, Kīlauea Volcano on Hawai'i entered a new eruptive phase with an outbreak of a series of fissures in the lower Puna area (Liu et al, 2021;Anderson et al, 2019;Gansecki et al, 2019;Patrick et al, 2020). The active phase volcanic gas emissions resulted in localized evacuations in the Lower East Rift Zone (LERZ) and poor air quality for much of the southern and western portions of the island (Tang et al, 2020).…”
Section: Post Field Test Improvements and Laboratory Testingmentioning
confidence: 99%