Vol. 13, issue 02, article # 10

Abstract:

The basic results of regular 9-year measurements of daytime surface ozone concentration (SOC) from March 1991 at the Dolgoprudnyi station (in a forest-park suburb of Moscow) are presented. A forecast statistical SOC model based on SOC as a regression function of its real value on the previous day and temperature and humidity forecasts for the next day is developed. The model can explain more than 50% of variances of SOC deviations from many-year mean values. Vertical mixing and ozone transport from the free troposphere into the boundary layer are supposed to play the most important part in diurnal SOC variation when maximum diurnal SOC is less than 60-80 ppb. At higher SOC values, the photochemical processes manifest their significant role the more explicitly. Some peculiarities of seasonal and diurnal SOC variation in the central Russia, as compared with analogous SOC characteristics in the West Europe, seem to be connected with the fact that the Russian climate is more continental.