In situ observations of ClO in the Antarctic: ER-2 aircraft results from 54°S to 72°S latitude

W. H. Brune, J. G. Anderson, K. R. Chan

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Abstract

Mixing ratios of approximately 10 parts per trillion by volume (pptv) are found at cruise altitude in the vicinity of 55°S increasing to 50 pptv at 60°S. In the vicinity of 65°S latitude a steep gradient in the ClO mixing ratio is observed. At a fixed potential temperature, the ClO mixing ratio increases by an order of magnitude within a very few degrees of latitude through this sharp transition, thus defining the edge of a "chemically perturbed region'. From the edge of that region to the southern extension of the flights, 72°S, a dome of slowly increasing ClO best describes the distribution. -from Authors

Original languageEnglish (US)
Pages (from-to)16,649-16,663
JournalJournal of Geophysical Research
Volume94
Issue numberD14
DOIs
StatePublished - Jan 1 1989

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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