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Table of contents
Chapter 1: General introduction and aims of this doctoral thesis
1.1. General Introduction
1.2. Aims of this doctoral thesis and organization of the manuscript
Chapter 2: State of the art
2.1. Aerosol particles
2.1.1. Sources
2.1.2. Chemical composition
2.1.3. Microphysical properties
2.2. Spatial distribution
Chapter 3: Sampling sites and analytical tools
3.1. Sampling sites
3.2. Analytical tools
3.2.1 In-situ measurements
3.2.1.1 Particle size distribution
3.2.1.1.1 Scanning Mobility Particle Sizer (SMPS)
3.2.1.1.2. Optical Particle Counter (OPC)
3.2.1.2. Equivalent Black carbon (EBC) concentrations
3.2.1.2.1. Multi Angle Absorption Photometer (MAAP)
3.2.1.2.2. Aethalometer-33 (AE33)
3.2.1.3. Gas concentrations
3.2.1.3.1. Carbon monoxide (CO)
3.2.1.3.2. Nitrogen oxides (NOX)
3.2.1.3.3. RADON-222
3.2.1.4. Non refractory – PM1 chemical concentrations
3.2.1.4.1. Time-of-Flight Aerosol Chemical Speciation Monitor (ToF- ACSM)
3.2.1.4.2. Positive Matrix Factorization (PMF)
3.2.2. Remote Sensing
3.2.2.1. LIDAR
3.2.2.2. Aerosol layer height
3.2.3. Models
3.2.3.1. ECMWF-ERA-Interim and LACYTRAJ
3.2.3.2. HYSPLIT
Chapter 4: Results
4.1. Seasonal variation of aerosol size distribution data at the Puy de Dôme station with emphasis on the boundary layer/ free troposphere segregation (Farah et al., (2018) published in atmosphere)
4.1.1. Segregating between Boundary Layer (BL)/Aerosol Layer (AL) and FT air masses
4.1.1.1. Comparison between the Aerosol Layer Height from LIDAR Profiles and Boundary Layer Height Simulated with ECMWF
4.1.1.2. NOx/CO
4.1.1.3. Radon-222 (222Rn)
4.1.1.4. Comparison of the Four Criteria
4.1.1.5. Classification of Air Masses by Combining Four Criteria
4.1.2. Comparisons of the Free Troposphere and Boundary Layer Aerosol Properties
4.1.3. Aerosol Properties in the Lower Free Troposphere as a Function of Air Mass Type and Age
4.1.4. Conclusions
4.2. One year of on-line chemistry measurements of the non-refractory submicron aerosol at the Puy-de-Dôme with an emphasis on air mass transport and free troposphere / boundary layer conditions (Farah et al., (2018) in prep.)
4.2.1. Time series and mass concentrations
4.2.2 Seasonal variations
4.2.3 Diurnal variations
4.2.4 Air mass speciation
4.2.5 FT/BL conditions
4.2.6. Conclusions
4.3. Understanding sources of aerosol particles and their exchanges between the high altitude PUY and its surrounds.
4.3.1 Overview
4.3.2 Characterization of meteorology, back-trajectories
4.3.3 Bulk PM1 chemical composition
4.3.3.1 PUY Free Tropospheric (FT) conditions
4.3.3.1.1 Time series and concentrations
4.3.3.1.2 Diurnal variations
4.3.3.2 PUY Boundary Layer (BL) conditions
4.3.3.2.1 Time series and concentrations
4.3.3.2.2 Diurnal variation
4.3.3.2.2 Statistical study for the separation of sources
4.3.3.2.2.1 ME-2 results
4.3.3.2.2.2 ME-2 factors diurnal variations
4.3.4 Conclusions
Chapter 5: Synthesis and perspectives
5.1 Synthesis
5.2 Perspectives
References
