81758 - ATMOSPHERIC CHEMISTRY

Scheda insegnamento

Anno Accademico 2017/2018

Conoscenze e abilità da conseguire

At the end of the course, students will get an appropriate understanding of the chemical and physico-chemical processes occurring in the atmosphere, with special focus on problems related to ozone layer, greenhouse effect and tropospheric pollution both in the gaseous and in the heterogeneous phases (aerosol). In particular, students will gain the basic knowledge necessary to set up experimental design in the various compositional atmospheric problems (monitoring, trend and time series analysis, processes related to aerosol, outdoor and indoor environments); will possess the mathematical and informatic tools used in investigation methods; will get chemical and physical concepts needed to carry out qualitative and quantitative evaluations of the impact of processes induced by anthropic activity on the atmosphere by means of receptor-models and source-apportionment techniques.

Programma/Contenuti

This course provides a detailed overview of the chemical composition of the atmosphere with emphasis on key trace species responsible for air quality and climate change problems.

Beside introducing the importance of traces species, the evolution of their concentration in time and space at short, medium and large scale is explained together with the experimental tools which make these observation available (detection and measurement). Composition of the atmosphere under natural and polluted conditions

The concepts of secondary pollutants and atmospheric lifetime of chemical species in the atmosphere are provided in connection with atmospheric transport and their impacts on the environment, health and climate

Photochemistry and other relevant chemical processes will be introduced in order to explain classical and photosmog basics; stratospheric ozone depletion; oxidation chemistry of the troposphere; sources and sinks of greenhouse gases and other climate forcers.

A specific section of the course is devoted to aerosol chemistry and physical chemistry including sources and sinks, classification by size, composition and morphology, concept of primary and secondary aerosol, aerosol metrics, aerosol sampling and measurements, air quality and climate involvements of aerosol

Testi/Bibliografia

Slides and notes by L.Tositti

Papers and reviews of recent publication (Oxydation capacity of the atmosphere; aerosols) provided by L.Tositti

Jeremy Colls, Abhishek Tiwary: Air Pollution: Measurement, Modelling and Mitigation, Third Edition, 2009, CRC Press.

John H. Seinfeld, Spyros N. Pandis : Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, 2nd Edition, John Wiley & Sons, Dec 18, 2012.

Metodi didattici

Frontal lessons with PowerPoint presentations

Course includes direct research experience in the field by the teacher

Modalità di verifica dell'apprendimento

Oral examination on three topics, first one chosen by the candidate

Orario di ricevimento

Consulta il sito web di Laura Tositti

Consulta il sito web di Erika Brattich