Time Series of Surface Ozone in the Central European Territory of Russia During Spring–Summer 2004

A.M. Zvyagitsev, V. V. Rudakov, I. N. Kuznetsova, and V. I. Demin

Time series of surface ozone in Moscow, its suburbs and, at a rural site in the Penza region (500 km from Moscow) during spring–summer 2004 are compared. This comparison suggests that surface ozone observations in Moscow suburbs on a time scale of one week or more can be regarded as good characteristics of surface ozone at all midlatitudes of the European Russia territory. The westerly transport of surface ozone fields is observed, and such a field configuration is usually conserved for a day or longer. In the absence of long-term air pollution episodes in the mega-sity the surface ozone levels in central Moscow and its nearest suburbs differ slightly. The cases of significant horizontal surface ozone gradients in Moscow and its suburbs were related mostly to local temperature inhomogeneities due to the passage of atmospheric fronts and precipitation occurrences.