Monitoring of tropospheric ozone in atmosphere of megapolices and suburban area
Data on long-term investigations of ozone content in ground atmosphere in the regions of European part of Russia including Kara-Dag National Park (Crimea);69Moscow City, Tarusa City, Saint-Petersburg City, Viatskie Poliany and Karakulskaia Pristan’ in Kirov Region are presented. The technical means used for automatic long-term monitoring of tropospheric ozone together with some other atmospheric parameters are described. The main pattern of space-time variations of the tropospheric ozone content are demonstrated on the basis of the experimentally obtained data. Its include season and daily variations, variations related with concentration of gaseous ozone precursors, intensity of Sun radiation, air humidity and smoke content, day and night maxima, latitudinal distribution, peculiarities of ozone content in megalopolises and suburban areas. An existence of paradoxically high level of ozone in troposphere of suburban areas was experimentally shown. A general increase of ozone content in ground atmosphere was demonstrated including an increase in frequency and intensity of episodes of dangerously high level of average daily and single dose ozone content exceeding maximum allowable concentrations in megalopolises and recreation areas.