Carbonyl sulfide (COS) measurements in the Arctic polar vortex

Details Carbonyl sulfide (COS) measurements in the Arctic polar vortex Carbonyl sulfide (COS) measurements in the Arctic polar vortex

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..393k&link_type=abstract

Geophysical Research Letters, Volume 22, Issue 4, p. 393-396

Physics

2

Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Geochemical Cycles

Scientific paper

One stratospheric carbonyl sulfide (COS) vertical profile in the Arctic polar vortex has been retrieved from air samples collected by the MPAE balloon-borne cryogenic sampler on January 18, 1992, at Kiruna, Sweden. The measurements were made in the altitude range 7.5-28.5 km. The upper tropospheric volume mixing ratios of COS were 355+/-60 pptv. The stratospheric profile shows that COS is subject to considerable subsidence this time of the year. The lowest VMRs were encountered at around 20 km altitude, while above that height a COS increase was observed. A possible explanation could be reversible uptake of COS by frozen sulfuric acid aerosols.

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