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bromine‐containing source gases during EASOE
Author(s) -
Fabian Peter,
Borchers Reinhard,
Kourtidis Kostas
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 - 10.1029/93gl03044
Subject(s) - bromine , stratosphere , atmosphere (unit) , environmental science , middle latitudes , atmospheric sciences , bromide , altitude (triangle) , troposphere , atmosphere of earth , meteorology , environmental chemistry , chemistry , geology , physics , geometry , mathematics , organic chemistry
Vertical profiles of CBrClF 2 (Halon‐1211), CBrF 3 (Halon‐1301) and methyl bromide (CH 3 Br) 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 BrO x released from the three source gases was found to increase from about zero at 8 km to 11.4 pptV at 19 km altitude.