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Abstract:
The CHIMERE mesoscale chemistry transport model is used for the quantitative assessment
of the contribution of transboundary transport of anthropogenic admixtures from China to the surface
concentrations of major suspended pollutants, aerosol PM10, ozone O3, and nitrogen oxides NOx in
the Far Eastern region. Analyzed in detail are the time series of concentration of mentioned substances
computed with the model taking account and not taking account of anthropogenic emissions in China. It
is revealed that the transboundary transport of anthropogenic pollutants can cause the recurring episodes
of manyfold increase in the concentration of PM10 in the south of Khabarovsk region, as well as more
rare variations of O3 and NOx concentration. The trajectory and synoptic analysis demonstrated that the
episodes of the increase in the concentration of PM10 and O3 in the south of the region mainly depend on
the carryover of air masses from northeastern China in the front part of continental cyclones.
