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Field Detail
Code MDG-7.3
MDG code MDG-7.3
Name Use of ODS (ODP metric tons)
Definition Ozone depleting substance (ODS) is any substance containing chlorine or bromine, which destroys the stratospheric ozone layer that absorbs most of the biologically damaging ultraviolet radiation. The phasing out of ozone depleting substances, and their substitution by less harmful substances or new processes, are aimed at the recovery of the ozone layer. Substances controlled by the Montreal Protocol are categorised into annexes, with different groups in each annex. These include chlorofluorocarbons (CFCs) (Annex A, group I), halons (Annex A, group I), methyl bromide (Annex E, group I) among others. Controlled substance means a substance in Annex A, Annex B, Annex C or Annex E of the Montreal Protocol, whether existing alone or in a mixture. It includes the isomers of any such substance, except as specified in the relevant Annex, but excludes any controlled substance or mixture that is in a manufactured product other than a container used for the transportation or storage of that substance. Therefore trade in finished products would not fall under the control of the protocol. Ozone depleting potential (ODP) refers to the amount of ozone depletion caused by a substance. It is the ratio of the impact on ozone of a chemical substance compared to the impact of a similar mass of CFC-11. The ODP of CFC-11 is defined to be 1. CFCs have ODPs that range from 0.6 to 1 while hydrochlorofluorocarbons (HCFCs) have ODPs that range from 0.001 to 0.52. The halons have ODPs of up to 10 while methyl bromide has an ODP of 0.6.
Calculation/Formula Consumption = total production - destroyed quantities - production for internal feedstock use - production for internal quarantine use (for methyl bromide only) + total new imports - import for feedstock - import for quarantine use – total new exports + export to non-parties
Unit of Measure Metric Tonnes
Purpose/Rationale This indicator signifies the progress made towards meeting the commitments to phase out the use of ODSs of the countries which have ratified the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer and its Amendments of London (1990), Copenhagen (1992), Montreal (1997) and Beijing (1999).
Preferred Data Sources Global Monitoring
Primary Data Collection System Survey - International Agency / Global Monitoring
Frequency of Data Collection Annual
SPC Responsibility - Data Management SDP
SPC Programme SDP
Numerator Consumption = total production - destroyed quantities - production for internal feedstock use - production for internal quarantine use (for methyl bromide only) + total new imports - import for feedstock - import for quarantine use – total new exports + e
Unit Metric Tonnes
Other Metadata Link http://mdgs.un.org/unsd/mdg/Metadata.aspx