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Modeling the impact of climate change in Germany with biosphere models for long-term safety assessment of nuclear waste repositories.

J. Environ. Radioact. 115, 214-223 (2013)
Open Access Green as soon as Postprint is submitted to ZB.
Biosphere models are used to evaluate the exposure of populations to radionuclides from a deep geological repository. Since the time frame for assessments of long-time disposal safety is 1 million years, potential future climate changes need to be accounted for. Potential future climate conditions were defined for northern Germany according to model results from the BIOCLIM project. Nine present day reference climate regions were defined to cover those future climate conditions. A biosphere model was developed according to the BIOMASS methodology of the IAEA and model parameters were adjusted to the conditions at the reference climate regions. The model includes exposure pathways common to those reference climate regions in a stylized biosphere and relevant to the exposure of a hypothetical self-sustaining population at the site of potential radionuclide contamination from a deep geological repository. The end points of the model are Biosphere Dose Conversion factors (BDCF) for a range of radionuclides and scenarios normalized for a constant radionuclide concentration in near-surface groundwater. Model results suggest an increased exposure of in dry climate regions with a high impact of drinking water consumption rates and the amount of irrigation water used for agriculture.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Radionuclides; Final repository; Radioactive waste; Climate reference regions; Climate change; Biosphere dose conversion factors
ISSN (print) / ISBN 0265-931X
e-ISSN 0265-931X
Quellenangaben Volume: 115, Issue: , Pages: 214-223 Article Number: , Supplement: ,
Publisher Elsevier
Reviewing status Peer reviewed