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Global observations of stratospheric bromine monoxide from SCIAMACHY
Author(s) -
Sinnhuber B.M.,
Rozanov A.,
Sheode N.,
Afe O. T.,
Richter A.,
Sinnhuber M.,
Wittrock F.,
Burrows J. P.,
Stiller G. P.,
von Clarmann T.,
Linden A.
Publication year - 2005
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 - 10.1029/2005gl023839
Subject(s) - sciamachy , bromine , troposphere , stratosphere , environmental science , atmospheric sciences , atmosphere (unit) , nadir , atmospheric sounding , mixing ratio , atmospheric chemistry , satellite , meteorology , ozone , chemistry , geology , physics , organic chemistry , astronomy
The Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) onboard the ENVISAT satellite provides for the first time a global view on stratospheric bromine monoxide (BrO). Here we focus on a 10 day period in September 2002. The BrO retrievals are compared with modeled BrO profiles, based on estimated inorganic bromine (Br y ) from CFC‐11 retrievals by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on ENVISAT and the calculated BrO/Br y ratio from a photochemical model constrained by SCIAMACHY NO 2 retrievals. The BrO observations are broadly consistent with our current understanding of stratospheric bromine chemistry and a total stratospheric bromine loading of 18 ± 3 pptv. Comparisons between the measured stratospheric BrO column and the simultaneously measured total BrO column from SCIAMACHY nadir observations suggest an average global background tropospheric BrO mixing ratio of 1.0 ± 0.5 pptv.
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