Articles | Volume 10, issue 3
Atmos. Meas. Tech., 10, 1017–1042, 2017
https://doi.org/10.5194/amt-10-1017-2017
Atmos. Meas. Tech., 10, 1017–1042, 2017
https://doi.org/10.5194/amt-10-1017-2017
Research article
15 Mar 2017
Research article | 15 Mar 2017

A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high-altitude unmanned aircraft

Jochen Stutz et al.

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Short summary
A new limb-scanning Differential Optical Absorption Spectroscopy (DOAS) instrument was developed for NASA’s Global Hawk unmanned aerial system during the Airborne Tropical TRopopause EXperiment to study trace gases in the tropical tropopause layer. A new technique that uses in situ and DOAS O3 observations together with radiative transfer calculations allows the retrieval of mixing ratios from the slant column densities of BrO and NO2 at high accuracies of 0.5 ppt and 15 ppt, respectively.