Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 11, issue 6
Atmos. Chem. Phys., 11, 2973-2989, 2011
https://doi.org/10.5194/acp-11-2973-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Atmospheric implications of the volcanic eruptions of Eyjafjallajökull,...

Atmos. Chem. Phys., 11, 2973-2989, 2011
https://doi.org/10.5194/acp-11-2973-2011
© Author(s) 2011. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 31 Mar 2011

Research article | 31 Mar 2011

SO2 and BrO observation in the plume of the Eyjafjallajökull volcano 2010: CARIBIC and GOME-2 retrievals

K.-P. Heue1, C. A. M. Brenninkmeijer1, A. K. Baker1, A. Rauthe-Schöch1, D. Walter1,3, T. Wagner1, C. Hörmann1,3, H. Sihler1,3, B. Dix2, U. Frieß3, U. Platt3, B. G. Martinsson4, P. F. J. van Velthoven5, A. Zahn6, and R. Ebinghaus7 K.-P. Heue et al.
  • 1Max-Planck-Institut für Chemie (MPI), Mainz, Germany
  • 2Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA
  • 3Institut für Umweltphysik, Universität Heidelberg, Heidelberg, Germany
  • 4Avdelningen för kärnfysik, Lunds universitet, Lund, Sweden
  • 5Koninklijk Nederlands Meteorologisch Instituut (KNMI), De Bilt, The Netherlands
  • 6Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany
  • 7Institut für Küstenforschung, GKSS, Geesthacht, Germany

Abstract. The ash cloud of the Eyjafjallajökull (also referred to as: Eyjafjalla (e.g. Schumann et al., 2011), Eyjafjöll or Eyjafjoll (e.g. Ansmann et al., 2010)) volcano on Iceland caused closure of large parts of European airspace in April and May 2010. For the validation and improvement of the European volcanic ash forecast models several research flights were performed. Also the CARIBIC (Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrument Container) flying laboratory, which routinely measures at cruise altitude (≈11 km) performed three dedicated measurements flights through sections of the ash plume. Although the focus of these flights was on the detection and quantification of the volcanic ash, we report here on sulphur dioxide (SO2) and bromine monoxide (BrO) measurements with the CARIBIC DOAS (Differential Optical Absorption Spectroscopy) instrument during the second of these special flights on 16 May 2010. As the BrO and the SO2 observations coincide, we assume the BrO to have been formed inside the volcanic plume. Average SO2 and BrO mixing ratios of ≈40 ppb and ≈5 ppt respectively are retrieved inside the plume. The BrO to SO2 ratio retrieved from the CARIBIC observation is ≈1.3×10−4. Both SO2 and BrO observations agree well with simultaneous satellite (GOME-2) observations. SO2 column densities retrieved from satellite observations are often used as an indicator for volcanic ash. As the CARIBIC O4 column densities changed rapidly during the plume observation, we conclude that the aerosol and the SO2 plume are collocated. For SO2 some additional information on the local distribution can be derived from a comparison of forward and back scan GOME-2 data. More details on the local plume size and position are retrieved by combining CARIBIC and GOME-2 data.

Publications Copernicus
Special issue
Download
Citation
Share