Chemistry modeling and inverse reconstruction of emissions with a Lagrangian transport model / by Mingzhao Liu. Wuppertal, October, 2024
Inhalt
- Introduction
- Lagrangian chemical transport modeling
- Volcanic sulfur dioxide transport modeling
- Inverse modeling on atmospheric source reconstruction
- Structure of the thesis
- Lagrangian chemical transport modeling
- Overview on the MPTRAC model
- Exponential decay processes
- Wet deposition
- Hydroxyl radical oxidation in the gas phase
- Hydrogen peroxide oxidation in the aqueous phase
- Long-lived tracer chemistry
- Implicit chemistry scheme
- Inter-parcel mixing algorithm
- Case study of long-lived tracers
- Data and method
- Lagrangian chemical transport simulations of long-lived tracers
- ECMWF reanalysis
- SPARC Data Initiative
- MIPAS satellite observations
- Model initialization and setup
- Results
- Sensitivity of meteorological data
- Evaluation of the photolysis data
- Sensitivity on mixing parameters
- Model results across different potential temperatures
- Discussion
- Case study of Ambae eruption
- Data and Method
- Lagrangian transport of volcanic sulfur dioxide plume
- AIRS sulfur dioxide index
- TROPOMI SO2 measurements
- Results
- Baseline simulation
- Sensitivity test on SO2 release height
- Sensitivity tests on OH chemistry
- Sensitivity tests on wet deposition
- Impact of the extreme convection parameterization
- Discussion
- Case study of Raikoke eruption
- Model initialization
- Results
- Sulfur dioxide chemical lifetime analysis
- Correction for the simplified explicit scheme
- Evaluation of the simulated OH field
- Selection of the chemistry time step
- Assessment of computational costs
- Discussion
- Inverse source estimation with a particle filter
- Particle filter algorithm
- Ambae case study
- Simulation setup
- Particle filter versus backward trajectory method
- Sensitivity of reconstructed emissions to sink modeling
- Raikoke case study
- Discussion
- Summary
- Validation of OH fields with diurnal variability
- List of figures
- List of tables
- Bibliography