Abstract
The spatial and temporal variability of the tropospherically inert tracer, trichlorofluoromethane (CCl3F), has been simulated using a global atmospheric transport model, incorporating an advective-diffusive transport scheme and known release and photolytic data. The observational data are taken from the Geophysical Monitoring for Climatic Change (GMCC) global network1,2, from the Pacific north-west (PNW) USA and South Pole3, and from the CSIRO southern hemispheric stations at Cape Grim, Tasmania, and Mawson, Antarctica4,5. The resulting global CCl3F distribution is shown in Fig. 1. A current CCl3F atmospheric lifetime of 75 yr is obtained. The observations suggest that small, residual errors may exist in the CCl3F release data.
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Fraser, P., Hyson, P., Enting, I. et al. Global distribution and southern hemispheric trends of atmospheric CCl3F. Nature 302, 692–695 (1983). https://doi.org/10.1038/302692a0
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DOI: https://doi.org/10.1038/302692a0
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