Partager

Effets atmosphériques des composés halogénés qui diminuent la teneur en ozone : tendances actuelles et futures.

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

Auteurs : MONTZKA S. A., BUTLER J. H., ELKINS J. W., et al.

Type d'article : Article

Résumé

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.

Détails

  • Titre original : Present and future trends in the atmospheric burden of ozone-depleting halogens.
  • Identifiant de la fiche : 2000-0636
  • Langues : Anglais
  • Sujet : Environnement, Généralités
  • Source : Nature - vol. 398 - n. 6729
  • Date d'édition : 22/04/1999
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

Liens


Voir d'autres articles du même numéro (2)
Voir la source

Indexation