In situ observations of BrO over Antarctica: 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

The distribution of BrO inside the chemically perturbed region defined by greatly elevated ClO abundances was different from that found just outside. Inside, the BrO mixing ratio was 6.1 ± 1.1 pptv above the 440 K potential temperature surface, 4.7 ± 2.0 pptv between the 400 and 440 K surfaces, and less than 4 pptv below the 400 K surface. At high latitudes outside the chemically perturbed region, the BrO mixing ratio was 5.4 ± 1.4 pptv near the 450 K surface, but decreased to 2.9 ± 1.2 pptv at the 420 K surface. Away from the south polar region, at latitudes between 47°S and 37°N and potential temperatures between 435 and 500 K (18.5- to 20.7-km altitude), the BrO mixing ratio was 0.5-3.0 pptv. -from Authors

Original languageEnglish (US)
Pages (from-to)16,639-16,647
JournalJournal of Geophysical Research
Volume94
Issue numberD14
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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