Influence of Siberian forest fires smoke in July 2019 on the atmosphere pollution of Krasnoyarsk by particulate matter

摘要

The influence of smoke from Siberian forest fires on the pollution of the surface layer of the atmosphere of Krasnoyarsk by PM_(2.5) particulate matter is analyzed. The average daily maximum permissible concentration (35 μg/m~3) was used as a pollution criterion. The pollution period was 12 days when calculating the average daily concentrations of PM_(2.5) and 9.5 days when calculating the average hourly concentrations of PM_(2.5). In the first case, the maximum concentration of PM_(2.5) was 77.9 μg/m~3. and in the second case 164.5 μg/m~3. At a wind speed of about 6 m/s, the cleaning time for the city's atmosphere was approximately 80 minutes.