The methodology for calculating air pollution is based on the latest available knowledge acquired both domestically and abroad research, builds on the previously published publication Methodology of Air Pollution Calculation for Identification and Control technical parameters of resources, which was issued in 1979 by the then Ministry of Forestry and Water Management of the Czechoslovak Republic, and substantially extends it.

The methodology is primarily designed to develop scattering studies as a basis for quality assessment air.

Possibilities of calculation methodology

• calculation of air pollution by gaseous substances and dust from point, line and surface sources
• calculation of pollution from multiple source
• to determine the pollution characteristics in the dense geometric network of reference points and to prepare in this way the basis for the clear cartographic processing of the results of the calculations
• to take into account the statistical distribution of wind direction and velocity relative to the stability classes of the airborne layer according to the classification of Bubnik and Koldovsky
• an estimate of pollutant concentration at wind and under inversion in complex terrain

Reference point

• maximum possible short-term (half-hourly) values ​​of pollutant concentrations that may occur in all wind speed and air stability classes
• maximum possible short-term (half-hourly) pollutant concentrations regardless of wind stability and wind speed
• annual average concentrations
• the duration of concentrations exceeding certain predetermined values ​​(eg immission limits) /li>

Complementary characteristics

• determine the height of the chimney in order to meet the air pollution limits
• to determine the proportion of air pollution sources in total pollution up to 100 km from sources
• to set the times of exceedance of the selected concentrations for the seasonally variable source
• calculate the fall of dust
• to evaluate the dispersion of the exhalations emitted by the cooling towers

Limitations in calculation

• the methodology is not applicable to the calculation of air pollution at a distance of more than 100 km from sources and within urban areas below the roofs of buildings (eg at crossroads or street canyons).
• the base equations of the model can also not be used for the calculation of contamination under the inverse layer in complex terrain and in the wind (for this purpose the procedures listed in the method supplement) must be used.

Related

Contact

• p. Radomír SRNĚNSKÝ