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Abstract

The study evaluated the validity of long range range atmospheric dispersion models for real-time applications in nuclear emergency management. Modellers had to produce within 6 h from the alert time the concentration evolution forecasted at the sampling sites, without knowing in advance the place, duration and intensity of the release. Two tracer experiments were planned and executed. The release site was in North West France. The ground sampling network consisted of 168 sites in 17 European countries. At these sites, automated sequential air samplers were operated for 72 h. 28 modellers from 24 Institutes produced in real-time forceasts of the tracer cloud evolution across Europe. The values of the calculated concentrations were compared with the measurements, using a well-established statistical methodology.
The following conclusions were drawn:
logistics functioned perfectly;
forecast of a suitable weather situation for the experiment was of high quality;
communications performed well;
sampler chemical analysis gave good results;
participation in real time forecasting of LRT of air pollutants was larger than expected;
model results reproduced the general features of cloud displacement. ement.

Additional information

Authors: GIRARDI F, JRC Ispra (IT);GRAZIANI G, JRC Ispra (IT);NODOP K, JRC Ispra (IT)
Bibliographic Reference: Paper presented: ECO-INFORMA'96, Global Networks for Environmental Information, Lake Buena Vista, Florida (US), November 4-7, 1996
Availability: Available from (1) as Paper EN 40208 ORA
Record Number: 199611485 / Last updated on: 1997-01-16
Category: PUBLICATION
Original language: en
Available languages: en
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