Features of the spatial distribution of gaseous impurities in the atmosphere of the South-Eastern coast of Lake Baikal by route measurements in the summer period 2018-2019

Аннотация

The paper presents the results of route measurements of concentrations of sulfur dioxide (SO₂), nitrogen oxides (NO_x), carbon monoxide (CO), carbon dioxide (CO₂) in the atmosphere of the coastal zone of Lake Baikal in summer by Kultuk-Turka route in 2018 and along the Gremyachinsk-Monakhovo route in 2019. In summer period 2018 along the entire route, increased concentrations of SO₂, CO, NO₂ were observed in Noviy Enkhaluk with averaged values of 7.4 g/m³, 2.8 mg/m³ and 11 g/m³, respectively. Analysis of the obtained data of measurements of small gas impurities on the Gremyachinsk-Monakhovo route shows that the content of sulfur dioxide in the Barguzin Bay is 3 times higher than the data obtained in 2018 on the Kultuk-Turka route. The high level of SO₂ is due to the current weather situation associated with fires in large forest areas.