Detection of HOCl in the Antarctic stratosphere

Details Detection of HOCl in the Antarctic stratosphere Detection of HOCl in the Antarctic stratosphere

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1375t&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Dec. 1989, p. 1375-1377.

Physics

8

Antarctic Regions, Atmospheric Composition, Chlorine Compounds, Hydroxyl Compounds, Stratosphere, Atmospheric Chemistry, Infrared Spectra, Ozone Depletion, Solar Spectra

Scientific paper

An integrated vertical column abundance of 1.5 + or - 0.4 x 10 to the 14th molec/sq cm of HOCl has been inferred from high resolution infrared solar spectra measured by the JPL MkIV interferometer from the NASA DC-8 aircraft during flights over Antarctica in September 1987. This result was obtained by averaging spectra recorded at different times, dates, and locations, but may be considered a mid-morning measurement at a solar zenith angle of 88.2 degrees from 79 deg S, 83 deg E on September 20. This result poses an important constraint on the amount of HO(x) inside the Antarctic winter vortex and on the contribution of the HOCl catalytic cycle to the observed springtime ozone depletion.

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