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Navarro MA, Atlas EL, Saiz-Lopez A, et al. Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer. Proc Natl Acad Sci U S A. 2015;112(45):13789-93doi: 10.1073/pnas.1511463112.
Navarro, M. A., Atlas, E. L., Saiz-Lopez, A., Rodriguez-Lloveras, X., Kinnison, D. E., Lamarque, J. F., Tilmes, S., Filus, M., Harris, N. R., Meneguz, E., Ashfold, M. J., Manning, A. J., Cuevas, C. A., Schauffler, S. M., & Donets, V. (2015). Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer. Proceedings of the National Academy of Sciences of the United States of America, 112(45), 13789-93. https://doi.org/10.1073/pnas.1511463112
Navarro, Maria A, et al. "Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer." Proceedings of the National Academy of Sciences of the United States of America vol. 112,45 (2015): 13789-93. doi: https://doi.org/10.1073/pnas.1511463112
Navarro MA, Atlas EL, Saiz-Lopez A, Rodriguez-Lloveras X, Kinnison DE, Lamarque JF, Tilmes S, Filus M, Harris NR, Meneguz E, Ashfold MJ, Manning AJ, Cuevas CA, Schauffler SM, Donets V. Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer. Proc Natl Acad Sci U S A. 2015 Nov 10;112(45):13789-93. doi: 10.1073/pnas.1511463112. Epub 2015 Oct 26. PMID: 26504212; PMCID: PMC4653143.
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Proc Natl Acad Sci U S A. 2015 Nov 10;112(45):13789-93. doi: 10.1073/pnas.1511463112. Epub 2015 Oct 26.

Airborne measurements of organic bromine compounds in the Pacific tropical tropopause layer.

Proceedings of the National Academy of Sciences of the United States of America

Maria A Navarro, Elliot L Atlas, Alfonso Saiz-Lopez, Xavier Rodriguez-Lloveras, Douglas E Kinnison, Jean-Francois Lamarque, Simone Tilmes, Michal Filus, Neil R P Harris, Elena Meneguz, Matthew J Ashfold, Alistair J Manning, Carlos A Cuevas, Sue M Schauffler, Valeria Donets

Affiliations

  1. Department of Atmospheric Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149; [email protected].
  2. Department of Atmospheric Sciences, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149;
  3. Atmospheric Chemistry and Climate Group, Institute of Physical Chemistry Rocasolano, Consejo Superior de Investigaciones Cientificas, 28006 Madrid, Spain;
  4. Atmospheric Chemistry Observation and Modeling, National Center for Atmospheric Research, Boulder, CO 80307;
  5. Centre for Atmospheric Science, Chemistry Department, University of Cambridge, Cambridge CB2 1EW, United Kingdom; Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom;
  6. Met Office, Exeter EX1 3PB, United Kingdom;
  7. School of Biosciences, University of Nottingham, 43500 Semenyih, Selangor, Malaysia.

PMID: 26504212 PMCID: PMC4653143 DOI: 10.1073/pnas.1511463112

Abstract

Very short-lived brominated substances (VSLBr) are an important source of stratospheric bromine, an effective ozone destruction catalyst. However, the accurate estimation of the organic and inorganic partitioning of bromine and the input to the stratosphere remains uncertain. Here, we report near-tropopause measurements of organic brominated substances found over the tropical Pacific during the NASA Airborne Tropical Tropopause Experiment campaigns. We combine aircraft observations and a chemistry-climate model to quantify the total bromine loading injected to the stratosphere. Surprisingly, despite differences in vertical transport between the Eastern and Western Pacific, VSLBr (organic + inorganic) contribute approximately similar amounts of bromine [∼6 (4-9) parts per trillion] [corrected] to the stratospheric input at the tropical tropopause. These levels of bromine cause substantial ozone depletion in the lower stratosphere, and any increases in future abundances (e.g., as a result of aquaculture) will lead to larger depletions.

Keywords: ATTREX; bromine; tropopause

References

  1. Nature. 2006 Jan 19;439(7074):275-7 - PubMed
  2. Science. 1996 May 31;272(5266):1318-22 - PubMed

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