Partially radioactive impurities might also spread to the neighbouring states (the eastern part of Belarus, Poland, the Baltic States).Īt the end of the simulated period, the main direction of radionuclide transport was eastward, as a result of which significant concentrations of radioactive aerosols could be observed over the occupied parts of Donetsk and Luhansk regions." Significant concentrations of radionuclides could reach the city of Kyiv. "According to the results of the calculations, during 15-18 August 2022, the highest concentrations of radioactive aerosols can be observed within the territory of Ukraine, especially in the zone closest to the emission source, with a radius of 50-100 km in almost all directions from the ZNPP.
We have launched English Twitter! Follow us! Given the impossibility of determining the exact characteristics of the source of emissions in the event of a hypothetical accident at the ZNPP, the results of numerical modelling should be interpreted only qualitatively and in relative terms. The following characteristics of the size distribution for radioactive aerosols were used: average diameter 1 μm, standard deviation 2 μm. Radioactive emissions are given in the form of two-point sources at heights of 200m and 500m above the earth's surface, with a total stationary power of 1 becquerels/second (0.5 Bq/s for each sources).
The WRF forecast of meteorological conditions was calculated on the basis of GFS (global forecast data) with a spatial resolution of 0.5° and a time resolution of 3 hours.
The results of modelling the atmospheric transfer and dispersion of radioactive Cs-137 aerosols were obtained using the Weather Research Forecasting (WRF) ARW version 4.3 forecasting meteorological model and the CALMET-CALPUFF version 6 atmospheric dispersion modelling complex.
0 kommentar(er)
