THE ANTHROPOGENIC IMPACT OF NITROGEN OXIDES ON OZONE IN THE ATMOSPHERE OF A POLAR TOWN UNDER DIFFERENT ILLUMINATION

M. I. Beloglazov, A. Yu. Karpechko, G. N. Nikulin, and S. A. Rumyantsev

Measurements of surface ozone concentration and nitrogen oxides on roads in the town of Apatity (the Kola Peninsula) in the winter and summer of 1998/99 are presented. In winter the increase in nitrogen oxides results in a decrease in surface ozone. In summer this tendency is much weaker, and in some cases the surface ozone concentration increases like the photochemical smog. The intensity of anthropogenic impact is shown to decrease with wind strengthening due to a decrease in nitrogen oxide concentration.