CONCEPT FOR A SYSTEM OF EMERGENCY RESPONSE DURING DISPERSION OF RADIOACTIVITY OR POLLUTION IN THE ATMOSPHERIC BOUNDARY-LAYER

The paper presents a self-consistent physical mathematical model for d ispersion, transport, deposition and resuspension in the atmospheric b oundary layer in which the turbulent diffusion coefficients are determ ined from the concentration distribution function. The available meteo rological and local geographical information together with appropriate initial and boundary conditions are used to relate the field measurem ents to the concentration dispersion function and, correspondingly, to the diffusion coefficients. This makes it possible to find parameters needed for parameterisation of turbulent diffusion coefficients from field experiments. A scheme is proposed for solving a self-consistent problem for various parameterisations of diffusion coefficients. The m odel can easily be used for a local monitoring network at any kind of facility or installation during emergencies because it uses real-time measurements of pollutant concentration near the surface and/or deposi tion as well as other diffusion characteristics. The model output perm its prompt assessments of the emergency situation and provides aid in making decisions concerning mitigation of the consequences of the acci dent.