Articles | Volume 14, issue 24
https://doi.org/10.5194/acp-14-13391-2014
https://doi.org/10.5194/acp-14-13391-2014
Research article
 | 
16 Dec 2014
Research article |  | 16 Dec 2014

Bromine partitioning in the tropical tropopause layer: implications for stratospheric injection

R. P. Fernandez, R. J. Salawitch, D. E. Kinnison, J.-F. Lamarque, and A. Saiz-Lopez

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We propose the existence of a daytime “tropical ring of atomic bromine” surrounding the tropics at a height between 15 and 19km. Our simulations show that VSL bromocarbons produce increases of 3pptv for inorganic bromine and 2pptv for organic bromine in the tropical TTL on an annual average, resulting in a total stratospheric bromine injection of 5pptv. This result suggests that the inorganic bromine injected into the stratosphere may be larger than that from VSL bromocarbons.
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