OBSERVATION OF MINOR ATMOSPHERIC SPECIES CONTENT AND UV-RADIATION AT MOUNTAIN SCIENTIFIC STATION KISLOVODSK

Since 1979 observations of atmospheric minor species are carried out a t the scientific station Kislovodsk of the Institute of Atmospheric Ph ysics situated in a distant from pollution sources area of the North C aucasus at the altitude 2070 m a. s. 1. The results of the long-term m easurements of the total content and the vertical distribution of ozon e and NO2 as well as of the surface ozone concentration, UV radiation and the degree of polarization of the scattered solar radiation are pr esented. Some aspects of their long-term changes, seasonal and daily v ariations are highlighted. It is shown that variations of the minor sp ecies content are causes by the local, mesoscale and global dynamic pr ocesses which are specific for this observational site. Significant ch anges are induced by powerful volcanic eruptions. The observations at station Kislovodsk characterize the background state of the atmosphere over the continent.