GLOBAL DISTRIBUTION OF THE RESIDUAL OZONOSPHERE FIELD BASED ON TOMS SATELLITE DATA 1979-1992

Abstract

The residual ozone field (ROF), i.e., the global distribution of the total ozone content (TOC) after subtracting the contribution of calm solar energy, was constructed. Only the experimental Total Ozone Mapping Spectrometer (TOMS) Nimbus 7 data (1978–1993) were used. In order to suppress temporal variations, the daily TOC values were first averaged over a 1-yr period for each year of the TOMS data and then averaged over the entire 14-year period. Annual and general charts of TOC were plotted. For each version, the global mean TOC meridional profile was plotted by averaging meridional profiles. Differences between the meridional TOC distribution in this chart and the global mean meridional distribution of this parameter make up elements of the ROF. The ROF value is expressed in Dobson units (DU) with a sign. It is positive if the TOC value at the current point exceeds the global mean value at the same.