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Estimating the Ozone Depletion Potential of Methyl Bromide

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  • Murray R. Selwyn
  • James E. Georges
  • Alexander A. Georgiev

Abstract

Ozone depletion potential (ODP) represents the cumulative ozone depletion induced by a particular halocarbon relative to a reference gas (usually trichlorofluoromethane, CFC‐11). We focus on ODP estimation for methyl bromide. Previous attempts at its estimation have assumed that components of the ODP equation are lognormally distributed. By considering a wide range of modeling scenarios, we show that this restriction (which is based on computational convenience rather than experimental evidence) has obscured the true uncertainty in the ODP value. Moreover, when publishing point estimates for the ODP value, previous authors have given either mean or median values. We submit that a more appropriate choice for a point estimate is the mode since the distribution of ODP is skewed and since the mode is by definition, the most likely value. For each modeling scenario considered, modal values are given. In general, we find these ODP point estimates are considerably lower than those published elsewhere.

Suggested Citation

  • Murray R. Selwyn & James E. Georges & Alexander A. Georgiev, 1997. "Estimating the Ozone Depletion Potential of Methyl Bromide," Risk Analysis, John Wiley & Sons, vol. 17(1), pages 9-17, February.
    • Handle: RePEc:wly:riskan:v:17:y:1997:i:1:p:9-17
    DOI: 10.1111/j.1539-6924.1997.tb00839.x
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