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Modeling the Regional Influence of Ions on Aerosol Formation in the Atmosphere

Abstract

The results of numerical calculations of the variability of number concentrations of aerosol particles of different sizes and the rates of ion-induced nucleation and binary nucleation of sulfuric acid and water vapors are presented. The calculations were performed using a new three-dimensional model of regional transport and transformation of gaseous species and aerosols in the atmosphere, incorporating photochemistry, nucleation with the participation of neutral molecules and ions, condensation/evaporation, and coagulation processes. The numerical results indicate that ion-induced nucleation in wintertime plays a significant role in aerosol formation, especially in the lower troposphere and lower stratosphere over the Northern Hemisphere. Along with the level of air ionization, temperature and relative humidity are among the key factors controlling the dynamics of ionic processes in the atmosphere and their impact on the spatiotemporal distribution of aerosol particles.

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Funding

This study was supported by the Russian Foundation for Basic Research (project no. 19-05-50007) (Mikromir) and by state orders to the Marchuk Institute of Numerical Mathematics, Russian Academy of Sciences, and Institute of Energy Problems of Chemical Physics, Russian Academy of Sciences (project no. AAAA-0047-2018-0012).

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Correspondence to A. E. Aloyan or A. N. Yermakov.

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The authors declare that they have no conflict of interest.

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Translated by V. Arutyunyan

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Aloyan, A.E., Yermakov, A.N. & Arutyunyan, V.O. Modeling the Regional Influence of Ions on Aerosol Formation in the Atmosphere. Izv. Atmos. Ocean. Phys. 58, 246–253 (2022). https://doi.org/10.1134/S000143382203001X

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  • DOI: https://doi.org/10.1134/S000143382203001X

Keywords:

  • numerical model
  • atmosphere
  • binary nucleation
  • ion-induced nucleation
  • aerosol particles