0346669 20240103193805.220100913235959.9 3 s. cav_un_epca*02902431210-708518226-228Státní úřad pro jadernou bezpečnost decision support early phase Gaussian model radioactive pollution transport cav_un_auth*0228606 Hofman Radek Adaptivní systémy Department of Adaptive Systems AS AS UTIA-B Department of Adaptive Systems Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0101207 Šmídl Václav Adaptivní systémy Department of Adaptive Systems AS AS UTIA-B Department of Adaptive Systems Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2010/AS/hofman-assimilation of spatio-temporal distribution of radionuclides in early phase of radiation accident.pdf 1M0572 GA MŠk CZ cav_un_auth*0001814 GA102/07/1596 GA ČR CZ cav_un_auth*0227611 CEZ:AV0Z10750506 Exploitation of the data assimilation methodology in the early phase of radiation accident is studied. When radioactive pollutants are released into the atmosphere, a radioactive plume is passing over the terrain. The released radioactive material causes pathway-specific irradiation which has detrimental effects on population health. In order to ensure efficiency of introduced countermeasures, it is necessary to predict spatial and temporal distribution of the aerial pollution and material already deposited on the ground. The predictions are made by the means of a numerical dispersion model with many inputs. Output of such a model is a prediction of radiation situation given in terms of radiological quantities. Exact values of the inputs are uncertain due to the stochastic nature of the dispersion, lack of accurate information, etc. Their subjective choice can introduce significant errors into the predictions and thus decrease the positive impact of the countermeasures. 2011 DL http://hdl.handle.net/11104/0187629 2010 cav_un_epca*0290243 Bezpečnost jaderné energie 1210-7085 Roč. 18 7/8 2010 226 228 Státní úřad pro jadernou bezpečnost