EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
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GLORIA observations of pollution tracers C2H6, C2H2, HCOOH, and PAN in the North Atlantic UTLS region

Gerald Wetzel1, Felix Friedl-Vallon1, Norbert Glatthor1, Jens-Uwe Grooß2, Thomas Gulde1, Michael Höpfner1, Sören Johansson1, Farahnaz Khosrawi1, Oliver Kirner3, Anne Kleinert1, Erik Kretschmer1, Guido Maucher1, Hans Nordmeyer1, Hermann Oelhaf1, Johannes Orphal1, Christof Piesch1, Björn-Martin Sinnhuber1, Jörn Ungermann2, and Bärbel Vogel2
Gerald Wetzel et al.
  • 1Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Karlsruhe, Germany (
  • 2Research centre Jülich GmbH, Institute of Energy and Climate Research - Stratosphere (IEK-7), Jülich, Germany
  • 3Karlsruhe Institute of Technology, Steinbuch Centre for Computing, Karlsruhe, Germany

The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging Fourier transform spectrometer (iFTS) using a 2-dimensional detector array to record emission spectra in the mid-infrared region with high spatial resolution. GLORIA is operated on high altitude research aircraft, mainly in the limb observational geometry to measure vertical profiles of temperature and atmospheric trace species with high vertical resolution.

In autumn 2017, the Wave-driven ISentropic Exchange (WISE) aircraft campaign took place from Shannon (Ireland). Sixteen flights with the High Altitude and Long Range Research Aircraft (HALO) were performed between 31 August and 21 October 2017 over the eastern North Atlantic region.

GLORIA observations were analysed with regard to pollutant species like C2H6, C2H2, HCOOH, and PAN, which are produced at distinct source regions near the ground and transported to remote regions due to their atmospheric lifetime of several weeks. Enhanced volume mixing ratios of these molecules were detected along some parts of the flight track in the upper troposphere and lowermost stratosphere (UTLS).

Measured profiles of these species are compared to simulations from the ECHAM/MESSy Atmospheric Chemistry (EMAC) model and reanalysis data from the Copernicus Atmosphere Monitoring Service (CAMS). Furthermore, emission tracers and back-trajectories from the Chemical Lagrangian Model of the Stratosphere (CLaMS) are used to analyse the source regions of these pollution events.

How to cite: Wetzel, G., Friedl-Vallon, F., Glatthor, N., Grooß, J.-U., Gulde, T., Höpfner, M., Johansson, S., Khosrawi, F., Kirner, O., Kleinert, A., Kretschmer, E., Maucher, G., Nordmeyer, H., Oelhaf, H., Orphal, J., Piesch, C., Sinnhuber, B.-M., Ungermann, J., and Vogel, B.: GLORIA observations of pollution tracers C2H6, C2H2, HCOOH, and PAN in the North Atlantic UTLS region, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-6931,, 2020

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