Journal
ATMOSPHERIC MEASUREMENT TECHNIQUES
Volume 5, Issue 7, Pages 1741-1751Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/amt-5-1741-2012
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- National Aeronautics and Space Administration
- UK NERC NCAS
- NCEO
- National Science Foundation
- NASA Atmospheric Composition: Modeling and Analysis, solicitation [NNH10ZDA001N-ACMAP]
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This paper introduces a new inversion algorithm for retrievals of stratospheric BrO from the Aura Microwave Limb Sounder. This version is based on the algorithm described by Livesey et al. (2006a) but uses a more realistic atmospheric state to constrain the retrieval. A description of the methodology and an error analysis are presented. Single daily profile precision uncertainty, when taking the ascending-descending (day-night) difference, was found to be up to 40 pptv while systematic error biases were estimated to be less than about 3 pptv. Monthly mean comparisons show broad agreement with other measurements as well as with state-of-the-art numerical models. We infer a 2005 yearly total inorganic Br-y using the measured MLS BrO to be 20.3 +/- 4.5 pptv, which implies a contribution from very short lived substances to the stratospheric bromine budget of 5 +/- 4.5 pptv.
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