VERIFICATION OF A RISK ASSESSMENT MODEL OF ATMOSPHERIC POLLUTANTS WITH PUFF-PLUME MODELS USING SIMULATED WEATHER CONDITIONS INCLUDING LAND AND SEA BREEZE

Abstract

Environmental risk assessments will be necessary in the near future when every facility that may exhaust pollutants such as a chemical plant or a waste disposal plant is constructed. The puff-plume model is commonly used for the environmental assessments of atmospheric pollutions in Japan. Although the puff-plume model is applicable to calculating pollutants concentration in relatively simple wind fields, we have to examine whether it satisfies requirements of the risk assessment model. The aim of this study is to verify the model using common weather conditions simulated by a three dimensional atmospheric model. Pollutants concentrations were calculated by the puff-plume model and compared to those by three-dimensional simulations. The puff-plume model doesn't calculate pollutants concentrations accurately in the bay area under a weather condition that sea and land breeze is rising.