the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Towards a climatology of stratospheric bromine monoxide from SCIAMACHY limb observations
Abstract. Retrievals of stratospheric bromine monoxide (BrO) profiles from two years of limb measurements from the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) instrument onboard ENVISAT are analysed and a global climatology of stratospheric BrO is prepared. A comparison of the SCIAMACHY BrO retrievals with a set of four balloon-borne BrO profiles shows mean relative differences in the altitude range from 18 to 30 km between −42%. The SCIAMACHY BrO observations provide for the first time a picture of the seasonal variation of stratospheric BrO on a global scale. At mid-latitudes of both hemispheres BrO shows a strong seasonal cycle with a maximum in winter and a minimum in summer. The seasonal variation of BrO is closely correlated with changes in nitrogen dioxide (NO2), confirming our present understanding of gas phase bromine chemistry. Using the SCIAMACHY BrO observations together with the calculated bromine partitioning from a photochemical model constrained by the SCIAMACHY NO2 observations, the total stratospheric bromine loading is estimated to be 18.5±4 pptv. This indicates a contribution of about 3.5±4 pptv from short lived bromine species in addition to methyl bromide and the halons.
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RC S2046: 'Review of manuscript MS-NR: acpd-2006-0', Anonymous Referee #1, 26 Jul 2006
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RC S2960: 'Review of Sheode et al., ACPD-2006-0093', Ross Salawitch, 08 Sep 2006
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AC S3624: 'Reply to reviewer 2', Ninad Sheode, 06 Oct 2006
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AC S3624: 'Reply to reviewer 2', Ninad Sheode, 06 Oct 2006
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AC S3605: 'acpd-2006-93', Ninad Sheode, 06 Oct 2006


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RC S2046: 'Review of manuscript MS-NR: acpd-2006-0', Anonymous Referee #1, 26 Jul 2006
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RC S2960: 'Review of Sheode et al., ACPD-2006-0093', Ross Salawitch, 08 Sep 2006
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AC S3624: 'Reply to reviewer 2', Ninad Sheode, 06 Oct 2006
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AC S3624: 'Reply to reviewer 2', Ninad Sheode, 06 Oct 2006
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AC S3605: 'acpd-2006-93', Ninad Sheode, 06 Oct 2006
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Cited
6 citations as recorded by crossref.
- Stratospheric BrONO2 observed by MIPAS M. Höpfner et al. 10.5194/acp-9-1735-2009
- Validation of Aura Microwave Limb Sounder BrO observations in the stratosphere L. Kovalenko et al. 10.1029/2007JD008817
- Multi-year comparison of stratospheric BrO vertical profiles retrieved from SCIAMACHY limb and ground-based UV-visible measurements F. Hendrick et al. 10.5194/amt-2-273-2009
- Extending differential optical absorption spectroscopy for limb measurements in the UV J. Puķīte et al. 10.5194/amt-3-631-2010
- A global stratospheric bromine monoxide climatology based on the BASCOE chemical transport model N. Theys et al. 10.5194/acp-9-831-2009
- SCIAMACHY limb measurements of NO2, BrO and OClO. Retrieval of vertical profiles: Algorithm, first results, sensitivity and comparison studies S. Kühl et al. 10.1016/j.asr.2007.10.022