Atmospheric dispersion and ground deposition induced by the Fukushima Nuclear Power Plant accident: A local-scale simulation and sensitivity study

► We model atmospheric dispersion of the Fukushima accident at local scale (80 km). ► Comparisons to gamma dose rate measurements are within a factor 2-5. ► Comparisons to deposition measurements are within a factor 5-10. ► Source term is the most sensitive parameter. ► Gamma dose rate, especially peak values, are more sensitive than deposition.