Abstract
This paper describes a new numerical model of transport and transformation of gaseous and aerosol species in the atmosphere incorporating photochemistry, nucleation with neutral molecules and ions, condensation/evaporation, and coagulation. The results of calculations of the temporal variability of the calculated concentrations, the spectrum of aerosol particles in the atmosphere, and the rates of nucleation processes are presented. The results for the Northern Hemisphere in winter conditions indicate the significant role of the process of ion nucleation in the formation of aerosol. In addition to air ionization, temperature and relative humidity are among the key factors determining the dynamics of ion nucleation.
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Notes
The given estimate of the equilibrium vapor pressure H2SO4 was carried out taking into account the influence of the size of the condensation nuclei of the first mode [1].
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Funding
This work was supported by the Russian Foundation for Basic Research, project nos. 18-05-00289 and 19-05-50007 (Microworld), as well as by State Task of the Institute for Computational Mathematics of the Russian Academy of Sciences and the Talrose Institute of Energy Problems of Chemical Physics no. AAAA-0047-2018-0012.
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Aloyan, A.E., Yermakov, A.N. & Arutyunyan, V.O. Modeling the Influence of Ions on the Dynamics of Formation of Atmospheric Aerosol. Izv. Atmos. Ocean. Phys. 57, 104–109 (2021). https://doi.org/10.1134/S0001433821010023
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DOI: https://doi.org/10.1134/S0001433821010023