IMPROVEMENT OF THE ONE-WAY NESTING OF AIR-POLLUTION MODEL SMOG TO NUMERICAL WEATHER PREDICTION MODEL ETA

摘要

In this contribution we deal with the problem of summer photochemical smog and the episodes of high concentration of it in case of Prague, which can serve as a typical example of a city where traffic density increased several times during last decade. Increasing traffic density gives rise to problems with air pollution that is met mainly in summer months and that includes not only high concentrations of air-pollution just in the city but the problems of urban plume as well. We are mainly interested in its most important part - tropospheric ozone. Ground ozone concentration is measured in several monitors in Prague, but thanks to the complicated orography of Central Bohemia and limited number of monitors it is very problematic to obtain information about spatial distribution of this part of summer photochemical smog based on measured data. Another way how to estimate this distribution consists in using appropriate model. This approach supposes to use some meteorological diagnostic or prognostic model (depending on the fact, whether the aim of the activity is a diagnostic field of spatial ozone distribution or its forecast) together with chemical submodel involving the whole cycle of chemical reactions. In the subsequent paragraphs the chemical submodel called SMOG is briefly described together with links to the meteorological model. A future plans dealing with utilization of more detailed model of higher resolution are also mentioned.