• Lecturer: Dr. M. Rex
• E-Mailadresse: Markus.Rex@awi.de
• Time: 02.-05. April 2012 / 9:00 - 12:30 hrs and 14:00 - 17:30 hrs
• Location: S3032
• Credits: 2 credit points

Chemistry and Dynamics of the Ozone Layer (2 ECTS)
Dr. Markus Rex (AWI, Potsdam)

Introduction
- Ozone concentration/mixing ratio/partial pressure - Solar radiation / radiation transfer in the atmosphere - UV-B levels at the ground / Effect on ecosystems, humans and agriculture - Distribution of ozone in the atmosphere

Dynamics of the Ozone Layer
- Stability of the stratosphere, potential temperature - Mean zonal circulation of the stratosphere, meridional/residual circulation - Polar vortex, subtropical barrier - Waves in the stratosphere, wave - mean flow interaction, „Downward Control“ principle

Chemistry of the Ozone Layer
- Thermodynamics of chemical reactions - Kinetics of chemical reactions - „Chapman chemistry“, Ox-chemistry - NOx-chemistry - HOx-chemistry - CFCs and halogen-chemistry

Anthropogenic Ozone Loss / „Ozone Hole“
- Heterogeneous chemistry - Aerosols in the stratosphere, polar stratospheric clouds - Polar ozone loss, "ozone hole" - Interaction between climate change and ozone loss

Lab
Coding of a Chemical Model of the Ozone Layer
Model-based Analysis of Properties of the Ozone Layer
- Fundamentals of programming in Fortran
- Creation of a program flow chart
- Coding of the model core
- Coding of the remaining model structure - Testing and debugging of the 1-d model
- Integration of the model over 50 years, extension to 2d
- Analysis of diurnal and seasonal variation of the model ozone layer at different levels - Analysis of the relation of these to the lifetime of ozone and Ox at different levels, - Analysis of the geographical distribution of modelled total ozone - Comparison with measurements / analysis of model deficiencies