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Observations of the vertical distribution of stratospheric OClO
Author(s) -
Pommereau JeanPierre,
Piquard Jacques
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl00390
Subject(s) - arctic , atmospheric sciences , sunset , environmental science , mixing ratio , ground level , stratosphere , ozone , the arctic , ozone layer , spectrometer , climatology , meteorology , geology , physics , optics , oceanography , architectural engineering , ground floor , engineering
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 O 3 and NO 2 , 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 10 12 mol./cm² above 16 km and 17 km respectively. These values are consistent with ground‐based and aircraft total column measurements in the Arctic.