Dynamics of trace gases and aerosols in the atmosphere with consideration for heterogeneous processes |
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| Authors: | A E Aloyan A N Ermakov V O Arutyunyan V A Zagainov |
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| Institution: | 1.Institute of Numerical Mathematics,Russian Academy of Sciences,Moscow,Russia;2.Institute of Energy Problems of Chemical Physics,Russian Academy of Sciences,Moscow,Russia;3.Karpov Institute of Physical Chemistry,Moscow,Russia |
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| Abstract: | A combined mathematical model has been developed to reproduce space and time variations in the concentrations of multicomponent
gas constituents and aerosols in the atmosphere on both regional and urban scales. This model contains blocks of transport
of gas constituents and aerosols in the atmosphere with consideration for homogeneous binary nucleation, the kinetic processes
of condensation/evaporation and coagulation, chemical processes occurring in both gas and liquid phases, and the processes
of mass exchange during the gas-droplet (particle) interaction. A nonhydrostatic model of atmospheric mesoscale processes
is used to calculate the fields of meteorological elements and turbulent characteristics. The generation of new-phase particles
from precursor gases by the mechanism of homogeneous binary nucleation and their interaction with background aerosol are considered.
The results of numerical experiments are compared with the data obtained from field observations of both space and time variations
in the concentrations of gas constituents and aerosols and in the ionic content of aerosol particles over the Baikal region
under the influence of emissions from powerful industrial sources. |
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