Technical Note: Ensuring consistent, global measurements of short-lived halocarbon gases in the ocean and atmosphere

JH Butler, TG Bell, BD Hall, B Quack, LJ Carpenter, J Williams

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Short-lived halocarbons are significant sources of reactive halogen in the troposphere and likely the lower stratosphere. Quantifying ambient concentrations in the surface ocean and atmosphere is essential for understanding the impact of fluxes of these gases on marine boundary layer oxidation and lower stratospheric ozone-depletion processes. Despite the body of literature increasing substantially over recent years, calibration issues complicate comparison of results and limit the utility of building largerscale databases that would enable further development of the science (e.g. sea-air flux quantification, model validation, etc.). With this in mind, thirty-two scientists representing eight nations and from both atmospheric and oceanic halocarbon communities gathered in London in February 2008 to discuss the scientific issues and plan an international effort toward a common calibration scale. Here, we discuss the outputs from this meeting, suggest the compounds that should be targeted initially, identify opportunities for beginning calibration and comparison efforts, and make recommendations for ways to improve the comparability of previous and future measurements.
Original languageEnglish
Pages (from-to)11287-11297
Number of pages11
JournalAtmospheric Chemistry and Physics Discussions
Issue number3
Publication statusPublished - 2009

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