Lower stratospheric stationary waves and the longitude dependence of ozone trends in winter

Here we apply a mechanistic ozone transport model to investigate the extent to which the geographic dependence of total ozone trends in January can be explained as being due to decadal changes in the amplitudes and phases of stationary planetary waves. Results indicate that most or all of the statistically derived geographic dependence can be explained in this manner. In suport of the mechanistic model calculations, lower stratospheric geopotential height differences or "anomalies' between groups of Januaries are inversely correlated with the geographic distribution of ozone trends. -from Authors