Observations of the vertical distribution of stratospheric OClO

Details Observations of the vertical distribution of stratospheric OClO Observations of the vertical distribution of stratospheric OClO

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1231p&link_type=abstract

Geophysical Research Letters, Volume 21, Issue 13, p. 1231-1234

Physics

21

Atmospheric Composition And Structure: Instruments And Techniques

Scientific paper

A light and easily operated balloon-borne UV-visible spectrometer was designed for investigating ozone chemistry in the Arctic winter. The optical sonde was flown 10 times during EASOE in northern Scandinavia in winter 1991-92 to measure O3 and NO2, the results of which are presented in a companion paper. On two occasions, 13 and 16 January 1992, during the coldest period of the campaign, when PSCs were visible from the ground, OClO mixing ratios of 16+/-2 and 19+/-3 ppt (1 s.d.) respectively were detected around 20 km at sunset. These are the first OClO profiles to be reported. They yield integrated columns of 5.8 and 8.9 1012 mol./cm2 above 16 km and 17 km respectively. These values are consistent with ground-based and aircraft total column measurements in the Arctic.

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