Ozone measurements along vertical transects in the Alps

To investigate the vertical profiles of air pollutants in the boundary laye r, aircraft and balloon-born measurements and measurements using a cable ca r as an instrument platform have been performed in different parts of the A lps. This on-line monitoring of atmospheric pollutants requires expensive a nd sophisticated techniques. In order to control ambient air quality in rem ote regions, where no infrastructure like power supply is available, simple instruments are required. The objective of this study, which was coordinat ed and evaluated by the GSF-Forschungszentrum fur Umwelt und Gesundheit was first, to investigate the vertical distribution of ozone in different part s of the Alps and secondly, in addition to continuous analyser measurements , to test monitoring by means of two types of passive samplers. The selecti on of these samplers - one for one week use and another one for two week ap plication - was based on a passive sampler intercomparison done in a prelim inary study one year earlier.