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Present and future trends in the atmospheric burden of ozone-depleting halogens.

Author(s) : MONTZKA S. A., BUTLER J. H., ELKINS J. W., et al.

Type of article: Article

Summary

The burden of ozone-depleting chemicals in the lower atmosphere has been decreasing since 1994 as a result of the Montreal Protocol. Our measurements show that the decline stems predominantly from the decrease in the atmospheric load of trichloroethane, a previously common cleaning solvent. The influence of this chemical on the decline has now peaked, however. Although emissions of most gases regulated by the Montreal Protocol have decreased substantially over the past ten years emissions of (halon-1211) have remained fairly constant during this period. The consequent atmospheric accumulation of this halon is retarding the decline of ozone-depleting halogens in the atmosphere more than any other persistent gas.

Details

  • Original title: Present and future trends in the atmospheric burden of ozone-depleting halogens.
  • Record ID : 2000-0636
  • Languages: English
  • Subject: Environment, General information
  • Source: Nature - vol. 398 - n. 6729
  • Publication date: 1999/04/22
  • Document available for consultation in the library of the IIR headquarters only.

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