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Cited by 232

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Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: air quality model assessment using observations of sulfate oxygen isotopes in Beijing

Open access
Shao, Jingyuan, Chen, Qianjie, Wang, Yuxuan, Lu, Xiao, He, Pengzhen, Sun, Yele, Shah, Viral, Martin, Randall V., Philip, Sajeev, Song, Shaojie, Zhao, Yue, Xie, Zhouqing, Zhang, Lin, Alexander, Becky·2019·Atmospheric Chemistry and Physics

Abstract

Abstract. Air quality models have not been able to reproduce the magnitude of the observed concentrations of fine particulate matter (PM2.5) during wintertime Chinese haze events. The discrepancy has been at least partly attributed to low biases in modeled sulfate production rates, due to the lack of heterogeneous sulfate production on aerosols in the models. In this study, we explicitly implement four heterogeneous sulfate formation mechanisms into a regional chemical transport model, in addition to gas-phase and in-cloud sulfate production. We compare the model results with observations of sulfate concentrations and oxygen isotopes, Δ17O(SO42-), in the winter of 2014–2015, the latter of which is highly sensitive to the relative importance of different sulfate production mechanisms. Model results suggest that heterogeneous sulfate production on aerosols accounts for about 20 % of sulfate production in clean and polluted conditions, partially reducing the modeled low bias in sulfate concentrations. Model sensitivity studies in comparison with the Δ17O(SO42-) observations suggest that heterogeneous sulfate formation is dominated by transition metal ion-catalyzed oxidation of SO2.

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Metadata

Authors
Shao, J., Chen, Q., Wang, Y., Lu, X., He, P., Sun, Y., Shah, V., Martin, R. V., Philip, S., Song, S., Zhao, Y., Xie, Z., Zhang, L., & Alexander, B.
Venue
Atmospheric Chemistry and Physics
Published
2019-05-08
Volume
19
Issue
9
Pages
6107-6123
ISSN
  • 1680-7316 (ISSN-L)
  • 1680-7324
OpenAlex
W2910302786
Cited by
232
References
5
FWCI
14.58
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: air quality model assessment using observations of sulfate oxygen isotopes in Beijing. https://app.cochat.ai/papers/10.5194/acp-19-6107-2019
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Shao, J., Chen, Q., Wang, Y., Lu, X., He, P., Sun, Y., Shah, V., Martin, R. V., Philip, S., Song, S., Zhao, Y., Xie, Z., Zhang, L., & Alexander, B. (2019). Heterogeneous sulfate aerosol formation mechanisms during wintertime Chinese haze events: air quality model assessment using observations of sulfate oxygen isotopes in Beijing. Atmospheric Chemistry and Physics. https://doi.org/10.5194/acp-19-6107-2019

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