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Content archived on 2024-04-19

Investigation of the oxidizing capacity of the atmosphere by measurement of all relevant parameters over areas of different meteorological conditions and different pollutional impact


To quantify the impact of human activities on the oxidizing capacity of the troposphere, and the particular role of European emissions.

The basic concept is to perform measurements of both, the day time and night time oxidizing efficiency of the troposphere, by monitoring the free radicals OH and NO3 including the controlling parameters at sites with clean and polluted air and to provide a data base for well founded model predictions on local and European scales.

The planned experiments require - besides the measurements of the above two radicals - the determination of parameters as J (03), J (NO2), O3, NOX, CH4, H2O, PAN and several NMHC's. The various chemical, geographical and meteorological conditions required will be realized by measurements performed at Weybourne (GB), Schauinsland/Kleiner Feldberg (Germany), and at the Izana Observatory (Tenerife).

The comparison of observations with model calculations at a background site will be valuable for testing the understanding of the chemical behaviour in the background atmosphere, as well as for evaluating the impact of man-made emissions on the free troposphere chemistry.

The model has an extended chemical scheme which includes full diurnal calculations of approximately 50 compounds e.g. ozone, NOX, hydrocarbons, CO, etc., all the main compounds which are important for the ozone chemistry.

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Johann-Wolfgang-Goethe Universität Frankfurt
EU contribution
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Marie-Curie-Straße 11
60439 Frankfurt am Main

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Participants (3)