TITLE:
Long-Term Dynamics of Ozone in Surface Atmosphere at Remote Mountain, Rural and Urban Sites of South-East Siberia, Russia
AUTHORS:
Olga Khuriganova, Vladimir Obolkin, Hajime Akimoto, Tsuyoshi Ohizumi, Tamara Khodzher, Vladimir Potemkin, Liudmila Golobokova
KEYWORDS:
Ozone, Nitrogen Oxide, Solar Radiation, Monitoring, East Siberia
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.4,
April
22,
2016
ABSTRACT: Long-term monitoring of near-ground ozone concentration was performed in
the remote mountain area as well as at rural and urban sites of South-East
Siberia. Ozone concentrations at all three sites had similar seasonal dynamics
with its maximum in spring and minimum in autumn. Such seasonal trends were
characteristic of many areas of the Northern Hemisphere. Diurnal fluctuations
of ozone concentrations were caused by photochemical generation of ozone at
daytime and its partial depletion at night. Diurnal fluctuations were maximal
in spring and summer and minimal in December and January in accordance with
solar radiation intensity. At the urban site, mean ozone concentrations were
significantly lower (about 2 times) than those in the rural and background areas.
This was likely attributed to the increased consumption of ozone for oxidation
of air pollutants in the urbanized area. A tendency to the decrease of mean
annual ozone concentrations was recorded during long-term observations at the
mountain site Mondy.