|SCIENTIFIC DISCIPLINARY SECTOR||FIS/07|
The class deals with the effects and the dispersion of pollutants in the atmosphere. It is divided into four parts:
1) Introduction to atmospheric pollutants and their effects on the environment, climate and health
2) meteorology in the boundary layer
3) experimental and modeling methodologies to identify polluting sources
4) laboratory practice: compositional analysis of atmospheric particulate matter and research of emission sources
The class aims to provide the basic elements of atmospheric physics related to the boundary layer, which are relevant for the dispersion and transport of pollutants. Furthermore, the computational techniques for the numerical simulation of dispersive phenomena and the basis of diagnostic models based on experimental data (receptor models) will be addressed. The course as a whole aims to present state-of-the-art techniques in the field
The student will get the basic skills necessary for understanding:
the main atmospheric phenomena related to the dispersion of pollutants;
the physical principles as well as the experimental and modeling tools for the characterization of atmospheric pollutants, their sources, their effects;
the most advanced measurement techniques in the field (with a practical session in the laboratory).
The basic training of the bachelor degree in physics.
frontal lessons and a training session in the laboratory.
First part, Introduction (P. Prati): Composition of the earth's atmosphere, classification of pollutants, Health effects of atmospheric pollutants: state of the art and legislation, Air pollution and climate forcing: greenhouse effect, cloudiness, visibility.
Second part, physics of the atmosphere (F. Cassola): vertical structure and main dynamics of earth's atmosphere. Elements of thermodynamics of dry and humid air. The concept of air particle, adiabatic processes and vertical thermal gradient. Stability criteria and convective phenomena. Equations of motion and analysis of scale, geostrophic and hydrostatic balance. The atmospheric boundary layer. Fundamental processes and characteristic parameters. Diurnal cycle of the boundary layer. Atmospheric circulations at local scale (breezes). Stability conditions and effects on the dispersion of pollutants. Numerical modeling and meteorological forecasts from the planetary to the local scale.
Third part, evaluation of the dispersion of atmospheric pollutants: (P. Prati): physics techniques of monitoring, sampling and analysis of atmospheric pollutants. Methods for the identification and characterization of polluting sources. Receptor modeling: general principles, characteristics and limits, "Chemical Mass Balance" and "Positive Matrix Factorization". Outline of numerical modeling of pollutant dispersion.
Fourth part, laboratory (D. Massabò and P. Prati): execution of a short campaign for the collection and compositional analysis of atmospheric particulate, data analysis for the identification of natural and anthropogenic sources.
Some texts on specific topics will be suggested. All the didactic material (slides) will be available in the web.
Office hours: reception by appointment
PAOLO PRATI (President)
II Semester, detail will be fixed at the beginning of 2022
All class schedules are posted on the EasyAcademy portal.
The exam will be oral.
Questions on the topics of the class and a discussion on the results of the laboratory training.
Further informatio at the website https://www.ge.infn.it/~prati/Fisica%20dell'atmosfera%20e%20dispersione…