Search result: Catalogue data in Autumn Semester 2021
Environmental Sciences Master  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 Major in Atmosphere and Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Atmospheric Composition and Cycles | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number | Title | Type | ECTS | Hours | Lecturers | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 701-1233-00L | Stratospheric Chemistry | W | 4 credits | 2V + 1U | T. Peter, G. Chiodo | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Abstract | The lecture gives an overview on the manifold reactions which occur in the gas phase, in stratospheric aerosol droplets and in polar cloud particles. The focus is on the chemistry of stratospheric ozone and its influence through natural and anthropogenic effects, especially the ozone depletion caused by FCKW in mid-latitude and polar regions as well as the coupling with the greenhouse effect. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Learning objective | The students will understand the gas phase reactions in the stratosphere as well as reactions and processes in aerosol droplets and polar stratospheric clouds. The students will understand the most important aspects of stratospheric dynamics and the greenhouse gas effect in troposphere and stratosphere. The students will also aquire a good understanding of the coupling between stratospheric ozone and climate change. Furthermore, they will practise to explain fundamental concepts in stratospheric chemistry by means of scientific paper presentations. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Content | Short presentation of thermodynamical and kinetic basics of chemical reactions: bi- and termolecular reactions, photo-dissociation. Introduction to the chemical family concept: active species, their source gases and reservoir gases. Detailed treatment of the pure oxygen family (odd oxygen) according to the Chapman chemistry. Radical reactions of the oxygen species with nitric oxide, active halogens (chlorine and bromine) and odd hydrogen. Ozone depletion cycles. Methane depletion and ozone production in the lower stratosphere (photo-smog reactions). Heterogeneous chemistry on the background aerosol and its significance for heavy air traffic. Chemistry and dynamics of the ozone hole: Formation of polar stratospheric clouds and chloride activation. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Lecture notes | Documents are provided in the contact hours. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Literature | - Basseur, G. und S. Solomon, Aeronomy of the Middle Atmosphere, Kluwer Academic Publishers, 3rd Rev edition (December 30, 2005). - John H. Seinfeld and Spyros N. Pandis, Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, Wiley, New York, 1998. - WMO, Scientific Assessment of Ozone Depletion: 2014, Report No. 55, Geneva, 2015. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prerequisites / Notice | Prerequisites: Basics in physical chemistry are required and an overview equivalent to the bachelor course in atmospheric chemistry (lecture 701-0471-01) is expected. 701-1233-00 V starts in the first week of the semester. The exercises 701-1233-00 U will start only in the 2nd week of the semester. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 701-1239-00L | Aerosols I: Physical and Chemical Principles | W | 4 credits | 2V + 1U | M. Gysel Beer, D. Bell, E. Weingartner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Abstract | Aerosols I deals with basic physical and chemical properties of aerosol particles. The importance of aerosols in the atmosphere and in other fields is discussed. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Learning objective | Physical and chemical principles: The students... - know the processes and physical laws of aerosol dynamics. - understand the thermodynamics of phase equilibria and chemical equilibria. - know the photo-chemical formation of particulate matter from inorganic and organic precursor gases. Experimental methods: The students... - know the most important chemical and physical measurement instruments. - understand the underlying chemistry and physics. Environmental impacts: The students... - know the major sources of atmospheric aerosols, their chemical composition and key physical properties. - know the most important climate impacts of atmospheric aerosols. are aware of the health impacts of atmospheric aerosols. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Lecture notes | materiel is distributed during the lecture | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Literature | - Kulkarni, P., Baron, P. A., and Willeke, K.: Aerosol Measurement - Principles, Techniques, and Applications. Wiley, Hoboken, New Jersey, 2011. - Hinds, W. C.: Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles. John Wiley & Sons, Inc., New York, 1999. - Colbeck I. (ed.) Physical and Chemical Properties of Aerosols, Blackie Academic & Professional, London, 1998. - Seinfeld, J. H. and Pandis, S. N.: Atmospheric Chemistry and Physics: From Air Pollution to Climate Change. Hoboken, John Wiley & Sons, Inc., 2006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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