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Revision of deposition and weathering parameters for the ingestion dose module (ECOSYS) of the ARGOS and RODOS decision support systems |
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| Authors: | Andersson Kasper G Nielsen Sven P Thørring Håvard Hansen Hanne S Joensen Hans Pauli Isaksson Mats Kostiainen Eila Suolanen Vesa Pálsson Sigurdur Emil |
| Institution: | a Risø National Laboratory for Sustainable Energy, Technical University of Denmark, P.O. Box 49, DK-4000 Roskilde, Denmark b Norwegian Radiation Protection Authority, P.O. Box 55, 1332 Østerås, Norway c Faculty of Science and Technology, University of Faroe Islands, Nóatún 3, FO-100 Tórshavn, Faroe Islands d Department of Radiation Physics, Institute of Clinical sciences, the Sahlgren Academy, University of Gothenburg, SE 413 45 Gothenburg, Sweden e Radiation and Nuclear Safety Authority, P.O. Box 14, FI-00881 Helsinki, Finland f VTT Technical Research Centre, P.O. Box 1000, FI-02044 VTT, Espoo, Finland g Icelandic Radiation Safety Authority, Raudararstig 10, IS-150 Reykjavik, Iceland |
| Abstract: | The ECOSYS model is the ingestion dose model integrated in the ARGOS and RODOS decision support systems for nuclear emergency management. The parameters used in this model have however not been updated in recent years, where the level of knowledge on various environmental processes has increased considerably. A Nordic work group has carried out a series of evaluations of the general validity of current ECOSYS default parameters. This paper specifically discusses the parameter revisions required with respect to the modelling of deposition and natural weathering of contaminants on agricultural crops, to enable the trustworthy prognostic modelling that is essential to ensure justification and optimisation of countermeasure strategies. New modelling approaches are outlined, since it was found that current ECOSYS approaches for deposition and natural weathering could lead to large prognostic errors. |
| Keywords: | ECOSYS model Decision support Nuclear emergencies Ingestion dose Weathering Deposition |
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