Bulgarian emergency response system for release of hazardous pollutants - Fast decision mode

Abstract

The fast decision mode of the emergency response system is designed to help the relevant authorities in making important decisions, concerning the evacuation of the population in case of toxic air pollution due to accidents in industrial sites. The system is based on the following models: WRF, used as meteorological pre-processor; SMOKE - The emission pre-processor; CMAQ - The Chemical Transport Model (CTM) of the system. The pollutant is considered a tracer,i.e. it's chemical nature is not specified and it is only transported and deposited depending on meteorological conditions. The units are relative, since the amount and the coverage of the toxic spill, as well as the molar mass of the pollutant and the evaporation rate, are hypothetical. The numerical results demonstrate the good performance of the models and the practical value of the fast decision mode of the emergency response system.