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UP: Umweltphysik

UP 18: Atmosph
ärische Spurengase und Aerosole: Instrumentelles

UP 18.5: Fachvortrag

Dienstag, 14. März 2006, 17:30–17:45, E

Auto-MAX DOAS : A New Measurements Platform — •Ossama Ibrahim, Torsten Stein, Thomas Wagner, and Ulrich Platt — Institut Für Umweltphysik, Universität Heidelberg, Heidelberg

Measurements of tropospheric and stratospheric trace gases using the well established Multi Axes Differential Optical Spectroscopy (MAX-DOAS) technique are widely used nowadays.The MAX-DOAS instruments are mounted on different types of mobile platforms (satellites, airplanes and ships) besides the stationary ground-based measurements. Here we present the description and the first results of atmospheric trace gas measurements of the ground-based mobile MAX-DOAS (Auto-MAX DOAS). A small size MAX-DOAS instrument was mounted on a car and measurement of NO2 from different types of pollution sources were carried out(industrial area, heating facility and a powerplant). Results showed elevated Slant Column Densities(SCDs)of NO2 downwind from the source areas as expected.The measurements from this new platform provides the possibility of encircling certain and well-defined targeted polluting areas(e.g.industrial,heavy traffic)to estimate the in-flux and out-flux of tropospheric pollutants from them (such as NO2)or from urban areas affected by them as well. The Auto-MAX measurements provide a spatial resolution better than that of Satellites and airplanes for city pollution scale and also gives more possibilities for measurement strategies than those of stationary ground-based measurements.In the near future,improving the spectrometer integration time will improve the spatial resolution and make it more suitable for city pollution and single plume measurements.