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Emission location dependent ozone depletion potentials for very short-lived halogenated species

Abstract : We present trajectory-based estimates of Ozone Depletion Potentials (ODPs) for very short-lived halogenated source gases as a function of surface emission location. The ODPs are determined by the fraction of source gas and its degradation products which reach the stratosphere, depending primarily on tropospheric transport and chemistry, and the effect of the resulting reactive halogen in the stratosphere, which is determined by stratospheric transport and chemistry, in particular by stratospheric residence time. Reflecting the different timescales and physico-chemical processes in the troposphere and stratosphere, the estimates are based on calculation of separate ensembles of trajectories for the troposphere and stratosphere. A methodology is described by which information from the two ensembles can be combined to give the ODPs.
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Ignacio Pisso, P. H. Haynes, Kathy S. Law. Emission location dependent ozone depletion potentials for very short-lived halogenated species. Atmospheric Chemistry and Physics, European Geosciences Union, 2010, 10 (24), pp.12025-12036. ⟨10.5194/acp-10-12025-2010⟩. ⟨hal-00501631⟩

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