Abstract
Hemispheric maps of monthly mean total ozone display distinct waves of low zonal wavenumbers during winter months. In addition, there is a strong and statistically significant spatial correlation between the total ozone perturbation and the temperature perturbation in the lower stratosphere. Previous attempts at an explanation of the correlation appear somewhat unsatisfactory. In the current paper the climatological behavior for southern hemisphere October is investigated. Specifying the dynamics from observations in the linearized stationary ozone continuity equation, one can simulate the lowest wavenumbers of the hemispheric total ozone perturbation. Both vertical and horizontal advection substantially contribute to the total ozone perturbation, with significantly different patterns each. A conceptual picture for the correlation is developed, which accounts for both advection contributions. The slopes of lower stratospheric zonal mean potential temperature and ozone mixing ratio turn out to be important. Furthermore, the feasibility of a Matsuno‐type model for the waves in total ozone is shown.
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