engleski

REGIONAL SCALE MODELING OF AIR POLLUTION

In the second presentation, we will discuss issues relevant to the regional scale air quality assessment and forecasting on a range of about several hundred kilometers or so. The discussion will focus on complexities of the regional scale flow patterns ; interaction of the atmospheric boundary layer with the atmosphere above it ; development and movement of synoptic weather systems ; air-sea interaction ; trajectories including trans-urban, trans-boundaries, and trans-continental pollutant transport ; chemical transformation of the pollutants ; and superposition of pollutants from various regional emission sources. There is a number of atmospheric, dispersion, and air quality models that have been used in regulatory and research studies on regional scales. We will elaborate on the model structure, verification studies as well as their uncertainties and errors due to their inherent predictability limitations in addition to natural variability and stochastic atmospheric processes. In recent years the interest for providing air quality forecasts has been rapidly growing which lead to complex forecasting systems composed of atmospheric, dispersion, and air chemistry modules that can be used for air quality applications. Advantages, but also the limitations of these multi-component modeling tools will be discussed.

atmospheric modeling; dispersion modeling; air quality modeling

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