Changes in the levels and variability of halocarbons and the compliance with the Montreal Protocol from an urban view

•The variability of 7 halocarbons in Taipei was re-examined after 14years.•The reduced variability implies that the emissions have been largely curbed.•Average concentrations of ODS in Taipei have approximated background levels. Ambient levels and variability of major atmospheric halocarbons, i.e. C...

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