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Conclusion

The fact that the downward propagation is so well captured by even the simplest models allows us to believe that such models will be able to provide an answer to the question of  how  strongly changes in the stratosphere  will be felt near the surface.  Changes in the stratosphere take place due to the depletion of stratospheric ozone and the increasing levels of carbon-dioxide. However,  also changes in the stratopsheric structure related to  the 11-year solar cycle are often reported. On shorter timescales  understanding  of the downward propagation may improve  weather  and seasonal forecasts.