Ozone destruction by chlorine radicals within the Antarctic vortex: the spatial and temporal evolution of ClO-O3 anticorrelation based on in situ ER-2 data

J. G. Anderson, W. H. Brune, M. H. Proffitt

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Abstract

Initial conditions are characterized at aircraft flight altitude (18km) by highly amplified ClO mixing ratios (800 parts per trillion by volume (pptv)) within a well-defined "chemically perturbed region' (CPR) poleward of the circumpolar jet, within which zone exhibits limited erosion (~15%) in middle to late August. Within the CPR, ozone decays consistently throughout the course of a 10-flight series, such that by late September, 75% of the O3 has disappeared within the region of highly amplified ClO concentrations (which reached 500 times normal levels at ER-2 cruise altitude). As this ozone depletion develops, O3 and ClO exhibit dramatic negative correlation on isentropic surfaces. -from Authors

Original languageEnglish (US)
Pages (from-to)11,465-11,479
JournalJournal of Geophysical Research
Volume94
Issue numberD9
DOIs
StatePublished - 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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