Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9458720 | Atmospheric Environment | 2005 | 9 Pages |
Abstract
The Tomographic Differential Optical Absorption Spectroscopy (Tom-DOAS) technique and results from a first application are presented. This novel technique serves to measure 2-3-dimensional concentration fields of different trace gases (e.g. NO2, SO2, ozone) in the planetary boundary layer on a small scale (100-10Â 000Â m) by the use of multiple light paths. Ways to use telescopes, lamps, retroreflector arrays and spectrometers for the simultaneous measurement of many light-paths are proposed. The results from a first Long-path Tom-DOAS experiment next to a German motorway, which was part of the BAB II campaign April/May 2001 [Edition of the Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe/Universität Karlsruhe, pp. 45, 2001), are presented. From the measurements along 16 different light paths vertical profiles on both sides of the motorway as well as a two-dimensional map of the NO2 vehicle emission plume are derived. The concentration distributions agree qualitatively with model simulations of an earlier campaign.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Atmospheric Science
Authors
I. Pundt, K.-U. Mettendorf, T. Laepple, V. Knab, P. Xie, J. Lösch, C.v. Friedeburg, U. Platt, T. Wagner,