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Table of contents
Chapter I: Introduction
1.1 Air pollutants in the Atmosphere
1.2 Effects of air pollution on climate
1.3 Health effect of air pollution
1.4 The development of atmospheric models
1.5 Urbanization and air quality
1.6 Objectives and outline of the PhD thesis
Chapter II: Meteorology and atmospheric dispersion in the urban canopy– One-year air quality simulations in France using IFS/CHIMERE modeling system
2.1 General principle of the chemical transport model
2.2 Urban meteorology
2.3 Urban canopy modeling
2.4 The basic equations and dispersion in the urban canopy layer
2.5 Preliminary study – Model setup
2.6 Results and Discussions
2.7 Conclusions
Chapter III: Impact of physics parameterizations on high-resolution air quality simulations over urban region
3.1 Introduction
3.2 Model Description and Experiment Design
3.2.1 WRF Model Description
3.2.2 Description of the CHIMERE Model
3.2.3 Domains Setup and Observations Data
3.3. Results and Discussions
3.3.1 Urban Parameters and Nudging Tests
3.3.2 Impact of the Urban Canopy Model
3.3.3 Impact of Mixing Boundary Layer Height
3.3.4 Impact of Land surface model
3.4 Conclusions
Chapter IV: On the impact of WRF-CHIMERE vertical grid resolution and first layer height on mesoscale meteorological and chemistry transport modelling
4.1 Introduction
4.2 Method
4.3. Results and Discussion
4.3.1 Surface meteorological and pollutants concentration
4.3.2 Vertical profiles
4.3.3 Comparison of model results with observations
4.4 Conclusions
Chapter V: Improvement of the vertical mixing in chemistry transport modelling based on a 1.5 order turbulence kinetic energy-based eddy diffusivity closure scheme
5.1 Introduction
5.2 Model Description and Experiment Design
5.2.1 WRF and CHIMERE Model Description
5.2.2 Domains Setup and Observations Data
5.3 Results and Discussions
5.3.1 Impact of the first layer height on NED modelling
5.3.2 NO2 and O3 Simulations over Paris region
5.3.3 PM2.5 and PM10 Simulations over Paris region
5.3.4 Study in Lyon and Bordeaux regions
