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UP: Umweltphysik
UP 18: Atmosph
ärische Spurengase und Aerosole: Instrumentelles
UP 18.7: Fachvortrag
Dienstag, 14. März 2006, 18:00–18:15, E
Two dimensional concentration distributions of a NO2 Emission plume from a point source derived by Airborne DOAS Tomography — •Klaus-Peter Heue1, Bing Chao Song1, Ping Wang2, Marco Bruns3, John P. Burrows3, Andreas Richter3, Thomas Wagner1, Ulrich Platt1, and Irene Pundt1 — 1Institut für Umweltphysik, Universität Heidelberg, INF 229, 69120 Heidelberg — 2Royal Netherlands Meteorological Institute (KNMI), P.O. Box 201, 3730 AE De Bilt, The Netherlands — 3Institut für Umweltphysik, Universität Bremen, Otto-Hahn-Allee 1, 28359 Bremen
We present airborne DOAS tomography measurements of two-dimensional concentration cross-sections of a plume from a point source. The measurements were performed with the AMAXDOAS (Airborne Multi-AXis Differential Optical Absorption Spectroscopy) instrument. The NO2 slant column densities form ten different viewing direction are observed simultaneously.
As part of the second campaign of the European FORMAT project (FORMAldehyde as a tracer of photo oxidation in the Troposphere) in August / September 2003, the instrument was installed on board a small aeroplane. Three over flights were performed across the emission plume of the power plant in Sermide on the bank of the Po river.
We present a novel technique to use two dimensional weighting matrices from atmospheric radiative transfer simulations for 2D tomographic reconstructions. The NOx emissions of 4−5 · 1024 molec/s derived by the reconstruction are compared to the information provided by the power plant company.