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Abstract The ability of the urban canopy model (UCM) to predict meso-scale atmospheric dispersion of radioactive materials is evaluated based on the Fukushima accident using the weather research and forecasting (WRF) model coupled with the single-layer and multi-layer UCM. The deposition of the radioactive materials is compared with observations for the different UCM. The results show that the multi-layer model gives the best simulations of the wind fields. Near the source, the single-layer model gives the best predictions of the accumulated ground deposition of 137Cs, while in the area far from the source, the single-layer model performs the best for the daily deposition of 131I and the multi-layer model performs the best for the daily deposition of 137Cs.
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| Keywords
urban canopy model (UCM)
radioactive material
atmospheric dispersion
weather research and forecasting (WRF) model
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Issue Date: 15 June 2014
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2014,
Vol. 54
),Shifei SHEN
