Use of the regional non-hydrostatic model for determining meteorological variables in forecasting radionuclides propagation and fallout

The first stage of works on coupling the regional hydro-dynamical model of meteorological field predictions and software for the radioactive situation predictions (NOSTRADAMUS) used for the operational forecasting of the radioactive species propagation to tens and hundreds kilometers is described. Results of the experiments with the different parametrizations of the boundary layer are presented. It is shown that the best predictions of the wind characteristics were obtained by using the Pleim-Chang parametrization (PCP) of the boundary layer 17]. In spite of that the characteristics of precipitation are simulated slightly better in the Eta parametrization, the observed underestimation of the precipitation estimates compared with those for PCP is insignificant and, thus, the latter can be preferred for further work.