Global transport of gaseous pollutants in the atmosphere and aerosol particle formation through kinetic processes

摘要

A mathematical model for the transport of multicomponent gaseous pollutants accounting for the photochemical transformations and aerosol formation in the Northern hemisphere is considered. Nucleation, condensation, and coagulation processes are taken into account. Aerosol size spectrum is divided into 25 bins (starting from 10~(-5) μm) by doubling the particle masses. Oxidation of sulfur dioxide into sulfuric acid vapor is considered. At some levels, this brings to supersaturation of H_2SO_4-H_2O with further deposition of the water solution of sulfuric acid onto the surfaces of condensation nuclei. Main principles of the model development and numerical realization are discussed and the results of numerical experiments are given based on calculations of sulfuric acid transformation and contrail formation in the troposphere of the Northern hemisphere.