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Low European methyl chloroform emissions inferred from long-term atmospheric measurements

Author

Listed:
  • Stefan Reimann

    (Empa, Institute of Materials Science and Technology)

  • Alistair J. Manning

    (Climate Research, Met Office)

  • Peter G. Simmonds

    (University of Bristol, Cantocks Close)

  • Derek M. Cunnold

    (Georgia Institute of Technology)

  • Ray H. J. Wang

    (Georgia Institute of Technology)

  • Jinlong Li

    (Georgia Institute of Technology)

  • Archie McCulloch

    (University of Bristol, Cantocks Close)

  • Ronald G. Prinn

    (Massachusetts Institute of Technology)

  • Jin Huang

    (Massachusetts Institute of Technology)

  • Ray F. Weiss

    (University of California at , La Jolla)

  • Paul J. Fraser

    (Commonwealth Scientific and Industrial Research Organisation, PMBI, Aspendale)

  • Simon O'Doherty

    (University of Bristol, Cantocks Close)

  • Brian R. Greally

    (University of Bristol, Cantocks Close)

  • Konrad Stemmler

    (Empa, Institute of Materials Science and Technology)

  • Matthias Hill

    (Empa, Institute of Materials Science and Technology)

  • Doris Folini

    (Empa, Institute of Materials Science and Technology)

Abstract

Methyl chloroform in the balance Use of the solvent methyl chloroform is being phased out under the Montreal Protocol because of its ozone-depleting properties. Its atmospheric concentrations are declining, but recent studies have come to conflicting conclusions about trends in European emissions. Estimates range from less than 100,000 kg per year to over 20 million kg per year, the latter more than doubling previous global estimates. A new study evaluates these estimates based on data from Mace Head in Ireland and Jungfraujoch, Switzerland. The results do not support the recent unexpectedly high estimates, but with emission estimates from 60 million kg per year in the mid-1990s to up to 3.4 million kg per year from 2000 to 2003, they are higher than the latest consumption-based figures. The authors speculate that if these figures are correct, unrecorded methyl chloroform sources must exist, suggesting under-reporting of emissions by industry or of consumption by the Montreal Protocol reporting process.

Suggested Citation

  • Stefan Reimann & Alistair J. Manning & Peter G. Simmonds & Derek M. Cunnold & Ray H. J. Wang & Jinlong Li & Archie McCulloch & Ronald G. Prinn & Jin Huang & Ray F. Weiss & Paul J. Fraser & Simon O'Doh, 2005. "Low European methyl chloroform emissions inferred from long-term atmospheric measurements," Nature, Nature, vol. 433(7025), pages 506-508, February.
    • Handle: RePEc:nat:nature:v:433:y:2005:i:7025:d:10.1038_nature03220
    DOI: 10.1038/nature03220
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