Measurements of stratospheric hydrogen cyanide at McMurdo Station, Antarctica: further evidence of winter stratospheric subsidence?

  • M. Jaramillo
  • , R. L. De Zafra
  • , J. Barrett
  • , L. K. Emmons
  • , P. M. Solomon
  • , A. Parrish

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We have made measurements of hydrogen cyanide (HCN) in the springtime Antarctic stratosphere using ground-based millimeter wave spectroscopy. We find a steeper decrease in volume mixing ratio with altitude than that found at tropical latitudes, from an assumed value of ~160 pptv in the troposphere to a value of 65 ± 30 pptv at 40 km, which may be further evidence of substantial vertical subsidence of the Antarctic winter stratosphere. -Authors

Original languageEnglish
Pages (from-to)16,773-16,777
JournalJournal of Geophysical Research
Volume94
Issue numberD14
DOIs
StatePublished - 1989

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