Surface ozone dynamics in the Kola Peninsula region

Measurements of surface ozone from the centre of the Murmansk Region (Apati ty, Kola peninsula) and its southern part (Hovda, White Sea coast) give a p icture of the behaviour of this air component on the Kola peninsula and sur rounding vicinity. Simultaneous measurements in Apatity and Kovda have show n that the ozone concentration in Apatity is roughly twice as much as in Ko vda. This fact may be explained by the local wind circulation and the prese nce of bromine near the coast of the Kola Peninsula. An inverse correlation is found between the ozone and nitrogen oxide concentrations from observat ions near motorways in Apatity. A decrease of nitrogen oxide concentration accompanies the growth of ozone on average. Thus, Apatity is a northern cit y in which the air pollution by traffic emissions decreases the ozone conte nt. (C) 2000 Elsevier Science Ltd. All rights reserved.