NARAC is a national support and resource center for emergency planning, real-time assessment, emergency response, and detailed studies of atmospheric releases of nuclear, radiological, chemical, biological, and hazardous natural materials. Located at the Department of Energy/National Nuclear Security Administration's (DOE/NNSA) Lawrence Livermore National Laboratory (LLNL), NARAC provides timely and accurate plume predictions to aid emergency preparedness and response efforts in protecting the public and the environment.
NARAC Response to the Fukushima Dai-ichi nuclear power plant accident (2011)
NARAC provided daily weather and plume forecasting to support mission planning and provide situational awareness for U.S. personnel deployed to Japan
DOE/NARAC provided predictions of possible arrival times and dose in U.S. Territories (particle animation shows the complexity of trans-Pacific dispersion)
Rapidly changing meteorological conditions presented a significant modeling challenge (particle animation shows changing meteorology over March 14-March 16 UTC)
NARAC conducted source estimation and model refinement based on available field data to predict the total external dose rate including the combined effects of airborne and ground contamination
NARAC and supplementary LLNL staff with then DOE/NNSA Principal Deputy Administrator Neile Miller
(in yellow jacket) in March 2011
Click on image above to stop slide show and play a complete animation
NARAC Web
Web site that provides authorized users access to NARAC modeling tools and products through an easy-to-use interface
CMweb
Web site for distribution of DOE/NNSA Emergency Response Consequence Management information and products to authorized users
IXP
Web site that provides International Atomic Energy Agency member states with access to 3-D model predictions of the consequences of airborne radiological releases from NARAC and other Global Dose Assessment Centers
HotSpot
PC-based atmospheric dispersion software package for rapid assessments of the downwind hazard from a radiological release
Lawrence Livermore National Laboratory
7000 East Avenue • Livermore, CA 94550
Operated by Lawrence Livermore National Security, LLC, for the
Department of Energy's National Nuclear Security Administration.
