Search result: Catalogue data in Autumn Semester 2021

Environmental Sciences Master Information
Major in Atmosphere and Climate
Prerequisites
NumberTitleTypeECTSHoursLecturers
701-0471-01LAtmospheric Chemistry Information W3 credits2GM. Ammann, T. Peter
AbstractThe lecture provides an introduction to atmospheric chemistry at bachelor level. It introduces the fundamentals of gas phase reactions, the concept of solubility and reactions in aerosols and in clouds. It explains the chemical and physical processes responsible for global (e.g. stratospheric ozone depletion) as well as regional (e.g. urban air pollution) environmental problems.
ObjectiveThe students will understand the basics of gas phase reactions and of reactions and processes in aerosols and clouds. The students will understand the most important chemical processes in the troposphere and the stratosphere.
The students will also acquire a good understanding of atmospheric environmental problems including air pollution, tropospheric ozone formation, stratospheric ozone destruction and the relationship between air pollution and climate change.
Content- Origin and properties of the atmosphere: composition (gases and aerosols), structure, large scale dynamics, UV radiation
- Thermodynamics and kinetics of gas phase reactions: enthalpy and free energy of reactions, rate laws, mechanisms of bimolecular and termolecular reactions.
- Tropospheric photochemistry: Photolysis reactions, photochemical O3 formation, role and budget of HOx, dry and wet deposition
- Aerosols and clouds: chemical properties, primary and secondary aerosol sources, solubility of gases, hygroscopicity, kinetics of gas to particle transfer, N2O5 chemistry, SO2 oxidation, secondary organic aerosol formation
- Air quality: role of planetary boundary layer, summer- versus winter-smog, environmental problems, legislation, long-term trends
- Stratospheric chemistry: Chapman cycle, Brewer-Dobson circulation, catalytic ozone destruction cycles, polar ozone hole, Montreal protocol
- Global aspects: global budgets of ozone, methane, CO and NOx, air quality - climate interactions
Lecture notesLecture materials (slides) are provided continuously during the semester, at least 2 days before each lecture.
Prerequisites / NoticeAttendance of the lecture "Atmosphäre" LV 701-0023-00L or equivalent knowledge is a pre-requisite, and basic courses in physics and chemistry are expected.

On Mondays (or upon agreement) a tutorial is offered. This allows the students to discuss unresolved issues from the lecture or to discuss the problems of the exercise series and their solution. Participation is recommended.
701-0473-00LWeather Systems Information W3 credits2GM. A. Sprenger, F. Scholder-Aemisegger
AbstractSatellite observations; analysis of vertical soundings; geostrophic and thermal wind; cyclones at mid-latitude; global circulation; north-atlantic oscillation; atmospheric blocking situtations; Eulerian and Lagrangian perspective; potential vorticity; Alpine dynamics (storms, orographic wind); planetary boundary layer
ObjectiveThe students are able to
- explain basic measurement and analysis techniques that are relevant in atmospheric dynamics
- to discuss the mathematical basics of atmospheric dynamics, based on selected atmospheric flow phenomena
- to explain the basic dynamics of the global circulation and of synoptic- and meso-scale flow features
- to explain how mountains influence the atmospheric flow on different scales
- basic understanding of the role of moist adiabatic processes for weather systems and why stable water isotopes are useful in this context
ContentSatellite observations; analysis of vertical soundings; geostrophic and thermal wind; cyclones at mid-latitude; global circulation; north-atlantic oscillation; atmospheric blocking situtations; Eulerian and Lagrangian perspective; potential vorticity; Alpine dynamics (storms, orographic wind); planetary boundary layer
Lecture notesLecture notes and slides
LiteratureAtmospheric Science, An Introductory Survey
John M. Wallace and Peter V. Hobbs, Academic Press
701-0475-00LAtmospheric PhysicsW3 credits2GU. Lohmann
AbstractThis course covers the basics of atmospheric physics, which consist of: cloud and precipitation formation especially prediction of thunderstorm development, aerosol physics as well as artificial weather modification.

Webpage for course: Link
ObjectiveStudents are able
- to explain the mechanisms of thunderstorm formation using knowledge of thermodynamics and cloud microphysics.
- to evaluate the significance of clouds and aerosol particles for artificial weather modification.
ContentThe course starts with introducing selected concepts of thermodynamics for atmospheric processes: The students learn the concept of the thermodynamic equilibrium and derive the Clausius-Clayperon equation from the first law of thermodynamics. This equation is central for the phase transitions in clouds.

Students also learn to classify radiosondes with the help the thermodynamic charts (tephigrams) and to identify cloud base, cloud top, available convective energy in them. Atmospheric mixing processes are introduced for fog formation. The concept of the air parcel is used to understand convection.

Aerosol particles are introduced in terms of their physical properties and their role in cloud formation based on Köhler theory. Thereafter cloud microphysical processes including ice nucleation are discussed.

With these basics, the different forms of precipitation formation (convective vs. stratiform) is discussed as well as the formation and different stages of severe convective storms.

The concepts are applied to understand and judge the validity of different proposed articifical weather modification ideas.
Lecture notesPowerpoint slides and chapters from the textbook will be made available on moodle: Link
LiteratureLohmann, U., Lüönd, F. and Mahrt, F., An Introduction to Clouds:
From the Microscale to Climate, Cambridge Univ. Press, 391 pp., 2016.
Prerequisites / Notice50% of the time we use the concept of "flipped classroom" (en.wikipedia.org/wiki/Flipped_classroom), which we introduce at the beginning.

We offer a lab tour, in which we demonstrate how some of the processes discussed in the lectures are measured with instruments.

There is a additional tutorial right after each lecture to give you the chance to ask further questions and discuss the exercises. The participation is recommended but voluntary.
CompetenciesCompetencies
Subject-specific CompetenciesConcepts and Theoriesassessed
Method-specific CompetenciesAnalytical Competenciesassessed
Problem-solvingassessed
Social CompetenciesCommunicationassessed
Personal CompetenciesCritical Thinkingassessed
Self-direction and Self-management assessed
701-0461-00LNumerical Methods in Environmental Sciences Information W3 credits2GC. Schär, C. Zeman
AbstractThis lecture imparts the mathematical basis necessary for the development and application of
numerical models in the field of Environmental Science. The lecture material includes an introduction into numerical techniques for solving ordinary and partial differential equations, as well as exercises aimed at the realization of simple models.
ObjectiveThis lecture imparts the mathematical basis necessary for the development and application of
numerical models in the field of Environmental Science. The lecture material includes an introduction into numerical techniques for solving ordinary and partial differential equations, as well as exercises aimed at the realization of simple models.
ContentClassification of numerical problems, introduction to finite-difference methods, time integration schemes, non-linearity, conservative numerical techniques, an overview of spectral and finite-element methods. Examples and exercises from a diverse cross-section of Environmental Science.

Three obligatory exercises, each two hours in length, are integrated into the lecture. The implementation language is Python (previous experience not necessary: a Phython introduction is given). Example programs and graphics tools are supplied.
Lecture notesPer Web auf Link
LiteratureList of literature is provided.
  •  Page  1  of  1