Bromine-containing source gases during EASOE

Details Bromine-containing source gases during EASOE Bromine-containing source gases during EASOE

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.1219f&link_type=abstract

Geophysical Research Letters, Volume 21, Issue 13, p. 1219-1222

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13

Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry, Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions

Scientific paper

Vertical profiles of CBrClF2 (Halon-1211), CBrF3 (Halon-1301) and methyl bromide (CH3Br) were measured during EASOE by means of cryogenic sampling and subsequent GC-analyses. Three flights of the MPAE balloon-borne sampler were carried out on January 18, February 6, and March 20, 1992, from Kiruna/Sweden. Stratospheric falloff rates of these substances, which constitute the dominant source of organically bound bromine in the atmosphere, were found, like those of other source gases measured during EASOE, to be considerably larger than those observed at midlatitudes. Total BrOx released from the three source gases was found to increase from about zero at 8 km to 11.4 pptV at 19 km altitude.

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