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Conclusions

We have studied the relationship between the interannual variability of climatic and chemical variables based on mapping the normalized eigenvalues of the first mode of their variability. We have shown that the eigenvalue maps (EVMs) allow comparison of the simulated and observed pressure-time distributions of the relative contribution of the first mode to the interannual variability. The EVMs also allow the determination of the change in the contribution of the first mode due to changes in boundary conditions at the top and bottom of the atmosphere.

From the comparison of the ACTM simulations that have no feedback on climate with the coupled climate/chemistry simulations we conclude that the former gives a greater contribution of the first mode for the ozone variability. From the coupled climate/chemistry simulations we have learned that in the upper stratosphere in January within 50°N-90°N, an increase in the input of solar radiation intensifies the relationship between the variabilities of the climatic and chemical variables.