Atmospheric dispersion simulations for estimating radiation dose to the public. Reconstruction of early internal dose to the public in the TEPCO Fukushima Daiichi nuclear power station accident

Internal dose to the public in early stages of the TEPCO (Tokyo Electric Power Company) Fukushima Daiichi nuclear power station accident was estimated by using atmospheric dispersion simulation which may be inevitably the sole realistic method because there scarcely left the measurement data. In the attempt of reconstruction of early internal dose investigation conducted by NIRS (National Institute of Radiological Science) for Fukushima Prefecture inhabitants, estimation from atmospheric dispersion simulation was partly consulted. In this report is presented also future prospect. (S. Ohno)