Vol. 16, issue 05-06, article # 16

Abstract:

Methods for estimation of surface ozone concentration trends are analyzed based on measurements of the surface ozone concentration at Kislovodsk High Mountain Station since 1989 until now. Statistical methods, filtering on the basis of different parameters, and modeling of the meteorologically adjusted trend are considered. It is shown, that the first mentioned group of methods confirms the presence of statistically significant negative trends in the surface ozone concentration at the measurement site. The filtering methods allow one to study the mechanisms of long-term changes. The integrated contribution of meteorological factors to the long-term changes of the surface ozone concentration is about 30%.