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1G - Long-range transport of pollutants (chemicals) (WE13/7) Assessment of the POP transport and contamination in the Northern Hemisphere. Alexander Malanichev and Victor Shatalov. Meteorological Synthesizing Centre East of EMEP, Russia. Malanichev, Alexander1, Shatalov, Victor1, 1 Meteorological Synthesizing Centre East of EMEP, Moscow, Moscow, Russia ABSTRACT- During the recent decades Persistent Organic Pollutants (POPs) have been entering the environment through various human activity. In view of POP physical-chemical properties, they may be transported and accumulated in the environment on the hemispherical and global scale. This is confirmed both by monitoring data from remote regions (e.g. the Arctic) and by model assessments of long-range transport potential. Preliminary model assessments show that considerable part of annual emissions substances like PCBs and g-HCH can be transported outside the European region and reach remote regions. For the assessment of the pollution transport to these regions MSC-East has been developing hemispheric transport model MSCE-POP. This model is a multicompartment 3-dimensional one including different media: the atmosphere, soil, seawater, vegetation, sediments and sea ice. Its spatial resolution is 2.5x2.5 degree. The main output information is redistribution of pollutants between environmental media, long-term trends in their contamination (1970-2000), spatial distribution of concentrations in them and deposition fluxes. Calculation results are verified via comparison with measured ones. Most of computed values are within a factor of 4 regarding to observed levels. The most important output of MSCE-POP model is source-receptor relationships, which gives opportunity to analyse the contributions of individual region emissions to pollution of interesting areas. For example, recent results of PCB and g-HCH transport simulation determined the regions of the Northern Hemisphere which emissions influence on the Arctic pollution in a great extent. Key words: POP environmental pollution, long-range transport simulation, PCBs, Lindane |
