ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2018. Vol. 24

Ozone and Oxides of Sulfur and Nitrogen in the Near-Surface Atmosphere above the Baikal Natural Territory

O. I. Khuriganova, V. A. Obolkin, V. L. Potemkin, L. P. Golobokova, T. V. Khodzher
Spatial and time dynamics of concentrations of the major gaseous impurities (O3, SO2 and NOx) were studied in 2015-2016 at three monitoring sites located on the Baikal Natural Territory (BNT) in the south of East Siberia. The authors used passive (diffusive), forced (filtration) and direct (gas analyzers) methods in the investigations with the correlation of 0.7 and higher.
The results obtained confirmed patterns of annual trends in the ozone distribution in the near-surface atmosphere at monitoring sites: maximal concentrations in spring (March-April) and minimal values in autumn (September-October). Mean concentrations of ozone were substantially lower at the urban site Irkutsk than at background site Mondy and rural site Listvyanka. Short-term fluctuations of ozone concentrations under urban conditions depended on the concentrations of sulfur and nitrogen oxides of anthropogenic character contrary to the background areas, where ozone concentrations were high during a year. The concentrations of sulfur and nitrogen dioxide in the urban and rural areas subjected significantly to seasonal and inter-annual fluctuations depending on air temperature varying during a year (in winter they were higher and in summer lower) and from year to year (in cold years higher and in warm years lower). At the site Listvyanka, the elevated concentrations of these gases were also recorded in the warm period. This is attributed to high recreational load of the settlement of Listvyanka as one of the largest tourist areas at Lake Baikal in the Irkutsk region.
For citation:
Khuriganova O. I., Obolkin V. A., Potemkin V. L., Golobokova L. P., Khodzher T. V. Ozone and Oxides of Sulfur and Nitrogen in the Near-Surface Atmosphere above the Baikal Natural Territory. The Bulletin of Irkutsk State University. Series Earth Sciences, 2018, vol. 24, pp. 111-123. https://doi.org/10.26516/2073-3402.2018.24.111. (in Russian)
ozone, gas impurities, measurement methods, monitoring sites, atmosphere

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