Simulation of radioactive fallout using the MATHEW/ADPIC model

Transport and deposition of radioactive particles emerging from a nuclear explosion in the middle part of Europe is simulated via the Eulerian computer model MATHEW/ADPIC. Comparisons are made between the calculated outcomes when varying parameters governing vertical wind and wet deposition. The resulting deposition patterns are also compared to calculations performed earlier with a Lagrangian trajectory model. It is shown that the outcome of the simulations is very sensitive to the varied parameters (vertical wind and precipitation) and it is therefore of great importance that those parts of the model are correctly described.