Chlorine isotope fractionation in the stratosphere

JC Laube; J Kaiser; WT Sturges; H Bonisch; A Engel

doi:10.1126/science.1191809

Chlorine isotope fractionation in the stratosphere

JC Laube
, J Kaiser
, WT Sturges
, H Bonisch
, A Engel

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

10 Downloads (Pure)

Abstract

Chlorinated organic compounds are important contributors to the anthropogenic enhancement of stratospheric ozone depletion. We report measurements of stratospheric isotope fractionation in such a compound. Stratospheric and tropospheric difluorodichloromethane (CF2Cl2) were found to have the largest relative 37Cl/35Cl isotope ratio difference ever measured for a natural compound. The increase of the relative isotope ratio difference with altitude was tightly correlated to the corresponding decrease in the CF2Cl2 mixing ratio. The observed relationship has a high potential to provide new insights into atmospheric chemistry and transport processes.

Original language	English
Pages (from-to)	1167
Number of pages	1
Journal	Science
Volume	329
Issue number	5996
DOIs	https://doi.org/10.1126/science.1191809
Publication status	Published - 2010

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10.1126/science.1191809

Laube et al. Science 2010 Chlorine isotope fractionation in the stratosphere_AAMAccepted author manuscript, 306 KB

Cite this

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abstract = "Chlorinated organic compounds are important contributors to the anthropogenic enhancement of stratospheric ozone depletion. We report measurements of stratospheric isotope fractionation in such a compound. Stratospheric and tropospheric difluorodichloromethane (CF2Cl2) were found to have the largest relative 37Cl/35Cl isotope ratio difference ever measured for a natural compound. The increase of the relative isotope ratio difference with altitude was tightly correlated to the corresponding decrease in the CF2Cl2 mixing ratio. The observed relationship has a high potential to provide new insights into atmospheric chemistry and transport processes.",

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AB - Chlorinated organic compounds are important contributors to the anthropogenic enhancement of stratospheric ozone depletion. We report measurements of stratospheric isotope fractionation in such a compound. Stratospheric and tropospheric difluorodichloromethane (CF2Cl2) were found to have the largest relative 37Cl/35Cl isotope ratio difference ever measured for a natural compound. The increase of the relative isotope ratio difference with altitude was tightly correlated to the corresponding decrease in the CF2Cl2 mixing ratio. The observed relationship has a high potential to provide new insights into atmospheric chemistry and transport processes.

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