Specific features of vernal ozone destruction over different antarctic regions

Abstract

Using the equations of ozone transport and measurements of the vertical ozone distribution and atmospheric parameters above Seva (1987–1988) and Amundsen-Scott (1987) stations, the vernal ozone destruction has been calculated for the cited periods. The values of chlorine and bromine oxides have been estimated. It has been indicated that a rather high ozone destruction was observed in 1987 above Seva and Amundsen-Scott stations, which was caused by high concentrations of ClO and BrO. In 1988, the temperatures at levels of 14–16 km were increased to 210–220 K, and ozone destruction was less pronounced and was caused by the meridional transport of ClO and BrO form the inner Antarctic regions due to the ingression of the Australian anticyclone on the Antarctic continent.