Global observations of stratospheric bromine monoxide from SCIAMACHY

Details Global observations of stratospheric bromine monoxide from SCIAMACHY Global observations of stratospheric bromine monoxide from SCIAMACHY

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3220810s&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 20, CiteID L20810

Computer Science

Sound

42

Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Composition And Structure: Troposphere: Composition And Chemistry, Atmospheric Processes: Remote Sensing

Scientific paper

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 (Bry) from CFC-11 retrievals by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) on ENVISAT and the calculated BrO/Bry ratio from a photochemical model constrained by SCIAMACHY NO2 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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