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Conclusions

The two experiments allowed showing that the difference of the annual mean temperature and ozone amount between at the solar maximum and at the solar minimum can be noticeable in the upper stratosphere and mesosphere (Fig.2).

Over the higher latitudes however, such a difference is less clear because of the high standard deviation related to small insolation in this region in winter. Hirooka (1994) 's analysis of measurement made at 1 hPa showed a local temperature difference of 2K, while the model simulated a difference temperature of 1K. Moreover we have shown that zonal wind anomalies in the Northern Hemisphere during winter have about 2-month periodicity (Fig.5 and 6). Those anomalies appear in the mid-high latitudes and shift poleward with time from October to March.

The change in the EP-flux anomalies highlights the influence of the solar cycle on the magnitude of the planetary waves (Fig.7). However, the factors involving this magnitude variation are not yet known.
A model taking the parametrization of the photodissosiation rates of NOx, and HOx into account will be implemented in the future to improve the results. An insight of the factors influencing the variation of the amplitude of the planetary waves will also be investigated.