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UMB1B

Umbrella 1B - Dispersion Modelling: Atmospheric and Marine

  • Map with probability of arrival of radioactive cloud to a given location from a hypothetical accident in the Sellafield nuclear facilities (on the left) and deposition map for Cs-137 from the worst case scenario for hypothetical accident. Units: Bq m-2 (on the right).
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    sigdah

UMB1B

The main objective is to improve atmospheric and marine dispersion models for predicting transport of radioactive releases (e.g., implement particle codes) and to enable identification of unknown sources contributing to radioactive releases. Most atmospheric and water dispersion models suffer from rather large uncertainties due to poor parametrization of the source term input data, and the probability of transport from a given source is usually not accounted for within large-scale modeling. Improvements of marine modelling is focused on coupling Lagrangian transport models (e.g., LLM species, colloids and particles) to the ROMS ocean model.

On picture above: Deposition map for Cs-137 from the worst case scenario for hypothetical accident. Units: Bq m-2.

Published 7. April 2017 - 10:13 - Updated 8. May 2017 - 10:34

Norwegian University of Life Sciences (NMBU)

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