ATMOSPHERIC TRANSPORT OF RADIOISOTOPES AND THE ASSESSMENT OF POPULATION DOSES ON A EUROPEAN SCALE
A model, called MESOS, to predict the medium to long range transport and dispersal of atmospheric releases of radionuclides, was developed. This model uses data derived from standard meteorological observations to follow the trajectories and dispersion of material released. It takes into account the evolving meteorological conditions in the boundary layer of the atmosphere, the synoptic scale wind, the intensity and duration of rain, etc. In order to apply the model to Western Europe, meteorological data bases providing the relevant information at three-hourly intervals have been compiled. The model has been used to compute the dispersal of hypothetical unit releases of selected radionuclides from five different source locations in different EC countries. The effects of continuous annual releases were simulated by suitably averaging the results for air exposure and for wet and dry deposition in order to permit the drawing of collective dose contour maps, using data grids of population distribution and food production. At selected receptor points around each source, the levels of contamination were calculated and analyzed in the form of frequency or cumulative probability distributions. Illustrative results are presented to show the potential application of the MESOS model for the evaluation of possible long-range consequences of accidental releases.
Bibliographic Reference: EUR 9128 EN (1983) FS, 463 P., BFR 1500, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989122081100 / Last updated on: 1987-01-01
Available languages: en