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Volume 12, issue 14 | Copyright

Special issue: New perspectives on Air-Ice Chemical Interactions (AICI) (ACP/ESSD...

Atmos. Chem. Phys., 12, 6237-6271, 2012
https://doi.org/10.5194/acp-12-6237-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Review article 19 Jul 2012

Review article | 19 Jul 2012

Halogen activation via interactions with environmental ice and snow in the polar lower troposphere and other regions

J. P. D. Abbatt1, J. L. Thomas2,3, K. Abrahamsson4, C. Boxe5, A. Granfors4, A. E. Jones6, M. D. King7, A. Saiz-Lopez8, P. B. Shepson9, J. Sodeau10, D. W. Toohey11, C. Toubin12, R. von Glasow13, S. N. Wren1, and X. Yang14,15 J. P. D. Abbatt et al.
  • 1Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
  • 2UPMC Univ. Paris 06, Université Versailles St-Quentin, CNRS/INSU, UMR8190, LATMOS-IPSL, Paris, France
  • 3University of California, Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA 90095, USA
  • 4Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden
  • 5Department of Physical, Environmental and Computer Science, Medgar Evers College-City University of New York, 1650 Bedford Avenue, Brooklyn, NY 11235, USA
  • 6British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
  • 7Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, UK
  • 8Laboratory for Atmospheric and Climate Science, CSIC, Toledo, Spain
  • 9Dept. of Chemistry and Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN, USA
  • 10Department of Chemistry and Environmental Reserach Institute, University College Cork, Cork, Ireland
  • 11Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO, USA
  • 12Laboratoire de Physique des Lasers, Atomes et Molecules, CNRS, UMR8523, Centre d'Etudes et de Recherches Lasers et Applications (CERLA), Universite des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq Cedex, France
  • 13School of Environmental Sciences, University of East Anglia, Norwich, UK
  • 14Centre for Atmospheric Science, Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
  • 15National Centre for Atmospheric Science (NCAS)-Climate, UK

Abstract. The role of ice in the formation of chemically active halogens in the environment requires a full understanding because of its role in atmospheric chemistry, including controlling the regional atmospheric oxidizing capacity in specific situations. In particular, ice and snow are important for facilitating multiphase oxidative chemistry and as media upon which marine algae live. This paper reviews the nature of environmental ice substrates that participate in halogen chemistry, describes the reactions that occur on such substrates, presents the field evidence for ice-mediated halogen activation, summarizes our best understanding of ice-halogen activation mechanisms, and describes the current state of modeling these processes at different scales. Given the rapid pace of developments in the field, this paper largely addresses advances made in the past five years, with emphasis given to the polar boundary layer. The integrative nature of this field is highlighted in the presentation of work from the molecular to the regional scale, with a focus on understanding fundamental processes. This is essential for developing realistic parameterizations and descriptions of these processes for inclusion in larger scale models that are used to determine their regional and global impacts.

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