Future polar ozone : predictions of Arctic ozone recovery in a changing climate / vorgelegt von Carsten Lemmen. Wuppertal : Berg. Univ. Wuppertal, Fachbereich Mathematik und Naturwiss., Fachgruppe Physik, 2005
Inhalt
- Abstract
- Zusammenfassung
- 1 Motivation
- 2 The stratosphere
- 2.1 Structure
- 2.2 Dynamics
- 2.2.1 Large scale transport
- 2.2.2 The lower-most stratosphere
- 2.2.3 Stratospheric stability
- 2.2.4 The polar stratosphere
- 2.2.5 Potential vorticity and vortex isolation
- 2.3 Chemistry of the Stratosphere
- 2.4 Climate Change
- 3 Models, data, and experiments
- 3.1 The Global Circulation Model ECHAM.DLR(L39)/CHEM
- 3.2 Time slice experiments with E39C
- 3.3 The Chemical Lagrangian Model of the Stratosphere
- 3.3.1 Lagrangian concepts
- 3.3.2 Organisation and modularity
- 3.3.3 Wind fields, heating calculation and trajectories
- 3.3.4 Box model chemistry, photolysis, and microphysics
- 3.3.5 CLaMS and CHEM in contrast
- 3.3.6 Lagrangian mixing and grid adaptation
- 3.4 Experimental setup of CLaMS
- 3.4.1 Boundary conditions from Mainz 2D
- 3.4.2 Parameters and data specific to this study
- 3.4.3 Chemical species and passive tracer initialisation
- 3.5 CLaMS experiments
- 3.5.1 Bromine loading experiments
- 3.5.2 Non-Montreal experiments
- 3.5.3 Isentropic experiments
- 3.5.4 Tracer experiments
- 3.6 Calculation of chemical ozone loss
- 4 Ozone loss in E39C time slices
- 4.1 Column ozone and Arctic minimum ozone
- 4.2 Tracer-tracer reference correlations
- 4.3 Chemical ozone loss
- 4.4 Chemical and dynamical changes 1990--2015
- 5 CLaMS simulations of the winter 2015/58
- 5.1 Polar vortex meteorology
- 5.2 Descent and boundary influence
- 5.2.1 Descent of a passive potential temperature tracer
- 5.2.2 Boundary influence and boundary tracers
- 5.3 Isolation of and export of air from the vortex
- 5.4 Reference correlations and denitrification
- 6 Ozone loss analyses with CLaMS
- 6.1 Evolution of the ozone column
- 6.2 Bromine chemistry and spring tracer correlations
- 6.3 The road not taken --- doubled EESC scenarios
- 6.4 Validation of TRAC
- 6.5 Sensitivity studies
- 6.5.1 Numerical sensitivities
- 6.5.2 Sensitivity to denitrification
- 6.5.3 Additional halogen sensitivities
- 6.6 Combined sensitivities and comparison to E39C
- 7 Future ozone depletion
- 7.1 Halogen loading
- 7.2 Comparison to other studies
- 7.3 A refined prediction of the Arctic minimum ozone column
- 7.4 Outlook
- A Supporting material
- Symbols and Abbreviations
- Figures
- List of Tables
- References cited