|著者所属・氏名||国立環境研究所（NIES） Morino Y. Ohara T.|
Atmospheric simulation models have played key roles in elucidating the atmospheric behaviors and deposition patterns of radioactive materials emitted from the Fukushima Daiichi Nuclear Power Plant after the nuclear accident in March 2011. In this review article, we summarize atmospheric modeling studies conducted after that accident. In particular, atmospheric models were used for source term estimates and analysis of atmospheric behaviors of radionuclides. In addition, atmospheric models provided results utilized in estimating health effects, forecasting,assessing log-term mitigation,and other tasks.Performance of atmospheric models for those purposes is evaluated in detail.Many problems remain,however,and future studies will be required for gaining a better understanding of radionuclides'environmental impact.