ETEX: A European tracer experiment; observations, dispersion modelling and emergency response |
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| Authors: | H Van dop R Addis G Fraser F Girardi G Graziani Y Inoue N Kelly W Klug A Kulmala K Nodop J Pretel |
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| Institution: | a1Institute for Marine and Atmospheric Research, Utrecht University, p.o. box 80005, 3508 TA Utrecht, Netherlands;a2Environmental Transport Group, Savannah River Technology center, Savannah River Site, Aiken, SC 29808, USA;a3CEC, DG XI/C/1, Centre Albert Wagner C354, 2920, Luxembourg;a4CEC, Joint Research Centre, Environment Institute, 21020 Ispra (Va), Italy;a5IAEA, Radiation Safety Section, Wagramer Strasse 5, p.o. box 100, 1400 Vienna, Austria;a6CEC, DGXII/D/4, 200 rue de la Loi, 1049 Brussels, Belgium;a7Institut f. Meteorologie, Technische Hochschule Darmstadt, Hochschulstrasse 1, 6100 Darmstadt, Germany;a8World Meteorological Organization, 41 Avenue Giuseppe Motta, P.O. Box 2300, Geneva 2, Switzerland;a9Czech Hydrometeorological Institute, Air Protection Division, Na Sabatce 17, 143 06 Praha, Czech Republic |
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| Abstract: | In Autumn, 1994, two releases of perfluorocarbon tracers from north-east France were tracked across northern Europe using a network of 168 ground stations with limited airborne sampling support. Simulating an emergency response situation, modellers from 20 countries reported their long-range dispersion predictions, initially within a few hours of the release and then over the coming days in line with the evolving meteorological data. Subsequent comparison of the predictions with the environmental results showed model performance varying from good, for the conditions of the first release in the majority of cases, to unsatisfactory for the second release in all cases. The experimental database now established represents a unique tool for investigating the effectiveness of future model developments. The papers in this special issue reflect the major scientific results |
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