Abstract
Annual observations of surface concentrations of ozone and other atmospheric trace gases in the Karadag nature reserve, Crimea, are presented. Concentrations of primary air pollutants (oxides of carbon, nitrogen, and sulfur) were several orders of magnitude less than Russian maximum permissible levels throughout the year. Variations in the ozone concentration are close to those on rural terrains of the southern countries of western Europe. The diurnal maximum of ozone concentration is observed 2–5 hours after noon. In seasonal behavior of the ozone concentration, there are two maxima: a major peak in late July – early August, and a lower peak in April. During hot seasons, there were episodes when, for a few days, the ozone level exceeded maximum permissible one-time concentration according to the national sanitary standards, but by no more than 10%. Based on World Health Organization criteria, the air quality on the territory of the reserve and, seemingly, along the entire Black Sea coast of Crimea is totally determined by the ozone concentration.
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