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Comparison and validation exercises of the three atmosphericdispersion models in RODOS

Published online by Cambridge University Press:  16 September 2010

Wolfgang Raskob ,
Michel Hugon  and
J. Päsler-Sauer
J. Päsler-Sauer*
Affiliation:
Karlsruhe Institute of Technology, Institut für Kern- und Energietechnik, Eggenstein-Leopoldshafen, Germany
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Abstract

During the EURANOS project three atmospheric dispersion models ATSTEP (ATSTEP, 2007),RIMPUFF (RIMPUFF, 1999), and DIPCOT (DIPCOT, 2009) used in the RODOS (Ehrhardt and Weis,2000) decision support system were subject of comprehensive comparison and validationstudies. The aim of the comparison exercise was a harmonisation of the models for a sampleof representative, non-complex dispersion and deposition situations in the distance rangebelow 100 km. Despite of different modelling and parameterisation the models shoulddeliver similar results under these conditions. Furthermore validation studies werecarried out with ATSTEP and DIPCOT using measured meteorological and contamination datafrom tracer dispersion field experiments. After minor model and parameter modificationsfinal comparison calculations of the models with realistic numerical weather prediction(NWP) data have shown satisfactory consistency of the results.

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References

Andronopoulos, S., Davakis, E., Bertzis, J.G., Kovalets, I. (2010) RODOS meteorological pre-processor and atmospheric dispersion model DIPCOT: a models suite for radionuclides dispersion in complex terrain, Radioprotection, 45, S77-S84.CrossRefGoogle Scholar
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DIPCOT model description (2009) Internet: http://www.rodos.fzk.de/Documents/Public/HandbookV6f/Volume3/RA2TN0901_DIPCOT.pdf.
Ehrhardt, J., Weis, A., (eds). RODOS: Decision Support System for Off-site Nuclear Emergency Management in Europe. European Commission, Brussels, Report EUR 19144, 2000.
Model Validation Kit (2007), Internet: http://www.harmo.org/kit/
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Päsler-Sauer J. Validation Studies with RODOS/Atstep, Proceedings of the 11th Intern. Conf. on Harmonization within Atmospheric Dispersion Modelling for Regulatory Purposes, Cambridge, 2007. Internet: http://harmo.org/conferences/proceedings/_Cambridge/publishedSections/Pp078-082.pdf.
RIMPUFF model description (1999) Internet: http://www.rodos.fzk.de/Documents/Public/HandbookV5/Volume3/4_2_6_RIMPUFF.pdf.