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UP: Umweltphysik
UP 20: Atmosph
äre und Messtechnik
UP 20.7: Fachvortrag
Tuesday, March 23, 2004, 18:00–18:15, HS 118
MAPPING OF TRACE GAS CONCENTRATION DISTRIBUTIONS BY DOAS-TOMOGRAPHY — •Irene Pundt1, Marco Bruns2, John Burrows2, Christoph v. Friedeburg1, Claudia Hak1, Andreas Hartl1, Klaus-Peter Heue1, Christian Kunz1, Thomas Laepple1, Kai-Uwe Mettendorf1, Wei-Der Lee1, Ulrich Platt1, Andreas Richter2, Bing-Chao Song1, Thomas Wagner1, and Ping Wang2 — 1Institut fuer Umweltphysik, Universitaet Heidelberg — 2Institut fuer Umweltphysik, Universitaet Bremen
DOAS Tomography is a technique for spatially resolved measurements of trace gas distributions. Column densities of one or several trace gases are measured by DOAS (Differential Optical Absorption Spectroscopy) along multiple light paths, and inverted to concentration distributions by tomographic inversion. The technique will help to investigate trace gas emissions and atmospheric parameters responsible for the spatial and temporal variations of these trace gases. In the framework of the German BMBF project Tom-DOAS and the European project FORMAT, we conduct tomographic measurements from the ground and from aircraft. New instruments are developed. In addition computer tools are developed to optimise instrumental configurations and to invert the measurements. An overview will be given on the Tom-DOAS technique and its capabilities.