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Concluding Remarks

The nudging Chemical Transport Model simulated 3-D distributions and seasonal variations of chemical species, although there is still small discrepancy between the calculations results and the observations in temperature, wind field, absolute amount of total ozone in the Arctic region. The calculations with the STS/ICE scheme are also going on, and the results and comparison with observations will be shown in the near future. Since it is easy to modify the model into a full-coupled chemistry GCM, the model will be used both as a CTM and as a chemical-radiative-dynamical full interactive GCM for atmospheric chemistry-transport studies and for prediction of the future ozone layer.