Abstract
A large study of trans-boundary pollution transfer in East Asia has been undertaken in 2002 under a cooperation program between China National Environmental Monitoring Centre (CNEMC) in Beijing and a consortium of French firms headed by ETI. The goal of the study has been to develop within CNEMC a capacity in air quality modelling, determine the geographic origin of air pollution in each Chinese province and neighbouring countries and evaluate the destination of the pollutants emitted by each province and neighbouring countries. The model will be used as a decision making tool to test the efficiency of emission reduction policies compared with ambient air quality objectives.
Tests for sulphur (wet and dry deposition) and ozone concentration have been made at the continental level for year 2000, with a day by day approach. Results have been compared with actual concentrations measured by air quality monitoring stations. The study has made it possible to calculate with a good precision how much sulphur emitted from each Chinese province is deposited in surrounding provinces and neighbouring countries.
The presentation includes a reminder of the initial assumptions, a whole set of colour maps showing the seasonal average concentration of SO2 and O3, the seasonal sulphur wet and dry deposition, the transfer of pollutants from province to province and the comparison of the values of calculated pollutants concentration with measured concentrations.
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