S. Galmarini et al., A SYSTEM FOR USING THE AIR RADIOACTIVITY MEASUREMENTS IN A LONG-RANGEMODEL TO FORECAST CLOUD EVOLUTION, Radiation protection dosimetry, 50(2-4), 1993, pp. 339-341
Citations number
NO
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging","Nuclear Sciences & Tecnology
The work described aims to make use of all the available information a
fter a nuclear accident to improve the forecast of the long range evol
ution of the radioactive cloud in the atmosphere. A procedure was deve
loped in the past to reduce uncertainties in long range transport mode
l predictions mainly due to inputing windfield data to atmospheric tra
nsport models which are the result of the forecasts of global or regio
nal circulation models. Measurements available in real-time of the air
concentrations from national monitoring grids have been used to reduc
e the uncertainties. The system is based on a long range transport mod
el which can run using a limited amount of meteorological information,
and an interpolation routine which generates a new area source from t
he air measurements, available in real-time, at ground level. The mode
l recalculates the predictions starting from the new source at the tim
e when the measurements were performed. The procedure has now been ful
ly automated and is available on a PC, with graphical output, to ease
its use in emergency situations. The system requires a connection to t
he ECMWF network for meteorological input data and to a radiological d
ata bank (ECURIE) or national monitoring networks for monitoring data.