Numerical simulation assessment via an atmospheric transport and dispersion model (ATDM) has proven extremely useful for efficiently estimating the impacts resulting from nuclear incidents. In August 2015, Hirosaki University was designated as Japanʼs national center for radiation emergency medicine and it is expected that the University will continue to play an integral role in the estimation of catastrophic-event influences per the use of ATDM simulations. Such simulations will help to conduct proper diagnoses and treatments for the general public in response to such emergency situations. In support of such endeavors, Hirosaki University has recently focused upon an ATDM simulation system developed by a project of the Interdisciplinary Study on Environmental Transfer of Radionuclides from the Fukushima Daiichi Nuclear Power Plant Accident. This simulation system is able to estimate radionuclide influences via the use of a common notebook without the need for extensive calculations. In this paper, the current installation and deployment status of the ATDM system at Hirosaki University are described.