Basics of experimental data sampling and analysis at different time scales. Ground based observations of environmental air-quality and meteorological parameters. Remote sensing atmospheric parameters from the ground and from satellites. Actinometric and spectroradiometric measurements of solar radiation. In situ measurements of the vertical distribution of atmospheric constituents. Quality control and quality assurance of measurements and calibration of instruments. Design, development and operation of networks for monitoring atmospheric constituents and environmental quality parameters. *Three laboratory or field experiments to be carried out by the students are included.