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Direct Observation of Two Dimensional Trace Gas Distributions with an Airborne Imaging Doas Instrument : Volume 8, Issue 22 (21/11/2008)

By Heue, K.-p.

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Book Id: WPLBN0003982789
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Direct Observation of Two Dimensional Trace Gas Distributions with an Airborne Imaging Doas Instrument : Volume 8, Issue 22 (21/11/2008)  
Author: Heue, K.-p.
Volume: Vol. 8, Issue 22
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Broccardo, S. P., Ross, K. E., Walter, D., Heue, K., Beirle, S., Piketh, S. J.,...Platt, U. (2008). Direct Observation of Two Dimensional Trace Gas Distributions with an Airborne Imaging Doas Instrument : Volume 8, Issue 22 (21/11/2008). Retrieved from

Description: Institut für Umweltphysik (IUP), Universität Heidelberg, Heidelberg, Germany. In many investigations of tropospheric chemistry information about the two dimensional distribution of trace gases on a small scale (e.g. tens to hundreds of metres) is highly desirable. An airborne instrument based on imaging Differential Optical Absorption Spectroscopy has been built to map the two dimensional distribution of a series of relevant trace gases including NO2, HCHO, C2H2O2, H2O, O4, SO2, and BrO on a scale of 100 m.

Here we report on the first tests of the novel aircraft instrument over the industrialised South African Highveld, where large variations in NO2 column densities in the immediate vicinity of several sources e.g. power plants or steel works, were measured. The observed patterns in the trace gas distribution are interpreted with respect to flux estimates, and it is seen that the fine resolution of the measurements allows separate sources in close proximity to one another to be distinguished.

Direct observation of two dimensional trace gas distributions with an airborne Imaging DOAS instrument

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