School of Physics Seminar Programme 2014-2015 Venue: AO208 Time: 15:00 Thursday, January 22nd • Forecasting Nuclear Accident Dispersion • ABSTRACT Dispersion modelling is a tool used widely for forecasting of air quality, volcanic ash and other fugitive emissions. In the case of a potential nuclear accident or radioactive emission, the Austrian Meteorological Service, Central Institute for Meteorology and Geodynamics (ZAMG) supports relevant national authorities with forecasts. ZAMG emergency response activities are presented, highlighting the different products and approaches taken in case of airborne radioactive emissions from different origins. A theoretical consideration of the radioactive decay processes along with operational application is also discussed. The speaker is Dr. Dèlia Arnold, who holds the position of academic consultant at ZAMG within the division Data, Methods and Models. She obtained her PhD in Nuclear Engineering in 2009. Since then she has worked on high resolution meteorological modelling and atmospheric transport modelling, especially of radioactive species. Since 2012 at ZAMG she has worked on atmospheric transport modeling, inverse modeling and demonstration operational services for aviation applications at ZAMG in addition to the WMO Task Team for the investigation of the Fukushima nuclear accident.