Other
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.3695h&link_type=abstract
Geophysical Research Letters, Volume 27, Issue 22, p. 3695-3698
Other
17
Atmospheric Composition And Structure, Atmospheric Composition And Structure: Middle Atmosphere-Composition And Chemistry
Scientific paper
Stratospheric BrO was spectroscopically monitored by its UV absorption in direct sunlight on 8 balloon flights that were conducted at middle and high latitudes in 1996 through 2000 [e.g., Ferlemann et al., 1998, 2000]. For conditions where detailed photochemical model calculations [Chipperfield, 1999] correctly predict other measured chemical (e.g., NO2, O3) and dynamical (e.g., N2O, F12, et cetera) tracers, the total stratospheric bromine (organic and inorganic) amount (Bry) is inferred. An excellent agreement between measured and modeled stratospheric BrO is found, assuming JPL-97 kinetics and Bry=20ppt in the photochemical model. As the BrO absorption cross section (σBrO) is the only external parameter used in the measurement, our finding tightly constrains the amount of total inorganic bromine (Bryin),20+/-2.5ppt above 25 km in 1996/97, as well as the photochemistry of stratospheric bromine.
Bösch Hartmut
Camy-Peyret Claude
Chipperfield Martyn P.
Fitzenberger Richard
Harder Hartwig
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