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Showing 1–14 of 14 results
Advanced filters: Author: Simon O’Doherty Clear advanced filters

  • Methyl bromide (CH3Br) is an important ozone-depleting substance whose use is regulated under the Montreal Protocol. However, the spatial-temporal patterns of China’s national CH3Br emissions remain unclear. Here, the authors find that China’s top-down emission estimates exceed bottom-up estimates by 60%.

    • Xiaoyi Hu
    • Bo Yao
    • Xuekun Fang
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-10

  • Levels of five chlorofluorocarbons rose in the atmosphere from 2010 to 2020 despite their production being banned by the Montreal Protocol, probably arising as by-products of hydrofluorocarbon production, according to analysis of abundance and emissions data.

    • Luke M. Western
    • Martin K. Vollmer
    • Johannes C. Laube
    Research
    Nature Geoscience
    Volume: 16, P: 309-313

  • Atmospheric concentration measurements at remote sites around the world reveal an accelerated decline in the global mean CFC-11 concentration during 2018 and 2019, reversing recent trends and building confidence in the timely recovery of the stratospheric ozone layer.

    • Stephen A. Montzka
    • Geoffrey S. Dutton
    • Christina Theodoridi
    Research
    Nature
    Volume: 590, P: 428-432

  • Atmospheric data and chemical-transport modelling show that CFC-11 emissions from eastern China have again decreased, after increasing in 2013–2017, and a delay in ozone-layer recovery has probably been avoided.

    • Sunyoung Park
    • Luke M. Western
    • Matthew Rigby
    Research
    Nature
    Volume: 590, P: 433-437

  • Atmospheric levels of chloroform increased after 2010, as a result of emissions in eastern China, according to analyses of measurements and inverse modelling.

    • Xuekun Fang
    • Sunyoung Park
    • Ronald G. Prinn
    Research
    Nature Geoscience
    Volume: 12, P: 89-93

  • Methane is an important greenhouse gas, responsible for about 20% of the warming induced by long-lived greenhouse gases since pre-industrial times. A compilation of observations and results from chemical transport, ecosystem and climate chemistry models suggests that a rise in wetland and fossil fuel emissions probably accounts for the renewed increase in global methane levels after 2006.

    • Stefanie Kirschke
    • Philippe Bousquet
    • Guang Zeng
    Reviews
    Nature Geoscience
    Volume: 6, P: 813-823

  • Substantial hydrofluorocarbon-23 emissions persist despite international reduction commitments: Emissions estimates based on inverse modelling of atmospheric measurements and transport exceeded reported values by more than five times in 2021.

    • Ben Adam
    • Luke M. Western
    • Matt Rigby
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 5, P: 1-8