Numerical simulation of the photochemical air pollution levels in Athens,Greece

This paper focuses on photochemical oxidant formation which is shown to be the most dominant feature of the Athenian air pollution problem. A simple but reliable photosmog model is used to simulate numerically the formation of photochemical oxidants on the basis of all available emission data. The resulting diurnal variation of the ozone concentration agrees fairly well with measurements. Predictions of the future development of the photosmog levels performed on the basis of realistic emission forecasts allow to conclude that no significant reduction of the photochemical air pollution in Athens can be expected in the next 25 years.