Abstract: In the seminar the atmospheric boundary layer is described together with the Gaussian plume model OML, which is a parameterized model estimating local (30 km) dispersion of air pollution. Most air pollution is emitted in the turbulent boundary layer or mixing layer extending from the ground surface up to about 1 km in average. The boundary layer is described with focus on the most important physical processes influencing the turbulence and plume dispersion. The Model and pre-processed meteorological data takes into account many of different physical processes acting in the boundary layer. The effect of source configuration e.g. building effects and plume rise are also important in plume dispersion and are described too. The OML model is compared with measurements and with other regulatory models used in other parts of the world.

Language: English