The novel HALO mini-DOAS instrument: inferring trace gas concentrations from airborne UV/visible limb spectroscopy under all skies using the scaling method

We report on a novel six-channel optical spectrometer (further on called mini-DOAS instrument) for airborne nadir and limb measurements of atmospheric trace gases, liquid and solid water, and spectral radiances in the UV/vis and NIR spectral ranges. The spectrometer was developed for measurements fr...

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Bibliographic Details
Published in:Atmospheric Measurement Techniques
Main Authors: Hüneke, Tilman, Aderhold, Oliver-Alex, Bounin, Jannik, Dorf, Marcel, Gentry, Eric, Grossmann, Katja, Grooß, Jens-Uwe, Hoor, Peter, Jöckel, Patrick, Kenntner, Mareike, Knapp, Marvin, Knecht, Matthias, Lörks, Dominique, Ludmann, Sabrina, Matthes, Sigrun, Raecke, Rasmus, Reichert, Marcel, Weimar, Jannis, Werner, Bodo, Zahn, Andreas, Ziereis, Helmut, Pfeilsticker, Klaus
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2017
Subjects:
article
Verlagsveröffentlichung
Antarc*
Antarctica
Online Access:https://doi.org/10.5194/amt-10-4209-2017
https://noa.gwlb.de/receive/cop_mods_00008189
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00008146/amt-10-4209-2017.pdf
https://amt.copernicus.org/articles/10/4209/2017/amt-10-4209-2017.pdf
Description
Summary:We report on a novel six-channel optical spectrometer (further on called mini-DOAS instrument) for airborne nadir and limb measurements of atmospheric trace gases, liquid and solid water, and spectral radiances in the UV/vis and NIR spectral ranges. The spectrometer was developed for measurements from aboard the German High-Altitude and Long-Range (HALO) research aircraft during dedicated research missions. Here we report on the relevant instrumental details and the novel scaling method used to infer the mixing ratios of UV/vis absorbing trace gases from their absorption measured in limb geometry. The uncertainties of the scaling method are assessed in more detail than before for sample measurements of NO2 and BrO. Some first results are reported along with complementary measurements and comparisons with model predictions for a selected HALO research flight from Cape Town to Antarctica, which was performed during the research mission ESMVal on 13 September 2012.

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