1 General sampling techniques.- 1.1 Sampling goals and requirements.- 1.1.1 Ambient sampling.- 1.1.1.1 General objectives.- 1.1.1.2 Meteorological considerations.- 1.1.1.3 Sampling site criteria.- 1.1.1.4 Sample scheduling.- 1.1.2. Source sampling.- 1.1.2.1 General objectives.- 1.1.2.2 Stationary source sampling.- 1.1.2.3 Mobile source sampling.- 1.2 Sampling methods.- 1.2.1 General sampling system considerations.- 1.2.1.1 Intake and transfer component.- 1.2.1.2 Collection component.- 1.2.1.3 Flow measurement component.- 1.2.1.4 Air moving component.- 1.2.2 Aerosols.- 1.2.2.1 Aerosol sampling considerations.- 1.2.2.2 Aerosol sampling collection components.- 1.2.2.3 Ambient aerosol sampling applications.- 1.2.2.4 Emission source aerosol sampling applications.- 1.2.3 Gases.- 1.2.3.1 Gas sampling considerations.- 1.2.3.2 Gas sampling collection components.- 1.2.3.3 Ambient gas sampling applications.- 1.2.3.4 Emission source gas sampling applications.- 1.2.4 Sampling of rainwater and fog.- References.- 2 Air pollution meteorology.- 2.1 Introduction.- 2.1.1 Wind and the turbulent mixing layer.- 2.1.2 The effect of source height.- 2.1.3. Plant design to achieve maximum atmospheric dispersion.- 2 1.4 Factors affecting long-range transport of pollutants.- 2.2 Meteorological measurements.- 2.2.1 Parameters affecting transport and dispersion of pollutants.- 2.2.2 Wind velocity measurements.- 2.2.3 Measurements to determine the atmospheric stability.- 2.2.3.1 Parameterizing the stability.- 2.2.3.2 Measurements of temperature at a fixed height.- 2.2.3.3.Measurements of vertical temperature gradient.- 2.2.3.4 Measurements of thermal radiation.- 2.2.4 Turbulence measurements.- 2.2.4.1 Turbulent energy.- 2.2.4.2 Turbulence spectra.- 2.2.4.3 Turbulent fluxes.- 2.2.5 Measurements of mixing depth.- 2.2.6 Precipitation measurements.- 2.3 Outline of the more important features of the atmospheric transport and dispersion of pollutants.- 2.3.1 Transport and dispersion in different types lƒ)