Articles | Volume 22, issue 5
https://doi.org/10.5194/acp-22-3595-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-3595-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Mar 2022
Research article |
| 17 Mar 2022
| 17 Mar 2022
Continuous CH4 and δ13CH4 measurements in London demonstrate under-reported natural gas leakage
Department of Physics, Imperial College London, London, SW7 2AZ, UK
Grantham Institute – Climate Change and the Environment, Imperial College London, London, SW7 2AZ, UK
Giulia Zazzeri
Department of Physics, Imperial College London, London, SW7 2AZ, UK
Heather Graven
CORRESPONDING AUTHOR
Department of Physics, Imperial College London, London, SW7 2AZ, UK
Grantham Institute – Climate Change and the Environment, Imperial College London, London, SW7 2AZ, UK
Alistair J. Manning
UK Met Office, Exeter, EX1 3PB, UK
Sylvia Englund Michel
Institute of Arctic and Alpine Research, University of Colorado,
Boulder, 80303 CO, USA
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Cited
18 citations as recorded by crossref.
- Using high frequency observations of δ13C-CH4 and δ2H-CH4 and uncertain regional isotopic signatures to estimate sources of UK methane emissions A. Ramsden et al. https://doi.org/10.5194/acp-26-11421-2026
- Evaluation of calibration strategies for accurate δ13CH4 measurements in dry and humid air J. Li et al. https://doi.org/10.5194/amt-19-1763-2026
- Six years of continuous carbon isotope composition measurements of methane in Heidelberg (Germany) – a study of source contributions and comparison to emission inventories A. Hoheisel & M. Schmidt https://doi.org/10.5194/acp-24-2951-2024
- Measurement report: Mobile measurements to estimate urban methane emissions in Tokyo T. Umezawa et al. https://doi.org/10.5194/acp-25-18015-2025
- Underestimation of Thermogenic Methane Emissions in New York City J. Pitt et al. https://doi.org/10.1021/acs.est.3c10307
- Uncertainties in Calibration of an Optical Spectrometer for Measuring Isotope Ratios in Methane C. Rennick et al. https://doi.org/10.1021/acsmeasuresciau.5c00094
- 30-Year Greenhouse Gas Changes in Megacities Driven by Emission Reduction Policies: A Case Study of Beijing Y. Wang et al. https://doi.org/10.1021/acs.est.6c07843
- Methane Source Attribution in the UK Using Multi‐Year Records of CH4 and δ13C C. Woolley Maisch et al. https://doi.org/10.1029/2023JD039098
- Achieving the Global Methane Pledge through key pathways in inter-country production and consumption networks using feasible technologies at minimum cost X. Liu et al. https://doi.org/10.1016/j.jclepro.2026.148985
- Partitioning anthropogenic and natural methane emissions in Finland during 2000–2021 by combining bottom-up and top-down estimates M. Tenkanen et al. https://doi.org/10.5194/acp-25-2181-2025
- 1.645 µm differential absorption lidar measurements of atmospheric methane using an Er:YAG laser D. Edouart et al. https://doi.org/10.5194/amt-19-4875-2026
- Observations-Based Approach to the Estimation of the Oxidizing Capacity of the Atmosphere of Central London over the 2000–2024 Period M. Khan et al. https://doi.org/10.1021/acs.jpca.6c02946
- Estimation of Anthropogenic CH4 and CO2 Emissions in Taiyuan‐Jinzhong Region: One of the World's Largest Emission Hotspots C. Hu et al. https://doi.org/10.1029/2022JD037915
- Developing calibration and measurement capabilities for atmospheric CH4 stable isotope ratios at NMIs/DIs: metrology for global comparability A. Srivastava et al. https://doi.org/10.1088/1681-7575/adcfa8
- Seasonal and Diurnal Variations in Greenhouse Gas Methane (CH4) in a Rural Area of Rome (Italy) A. Ianniello et al. https://doi.org/10.3390/atmos17020159
- Radiocarbon as a tracer of the fossil fraction of regional carbon monoxide emissions L. Blyth et al. https://doi.org/10.1088/1748-9326/ad8248
- Radiocarbon Measurements Reveal Underestimated Fossil CH4 and CO2 Emissions in London G. Zazzeri et al. https://doi.org/10.1029/2023GL103834
- Dense and diverse regional methane sources characterized using a tiered, dual-tracer measurement strategy A. Moyes et al. https://doi.org/10.1016/j.atmosenv.2025.121270
18 citations as recorded by crossref.
- Using high frequency observations of δ13C-CH4 and δ2H-CH4 and uncertain regional isotopic signatures to estimate sources of UK methane emissions A. Ramsden et al. https://doi.org/10.5194/acp-26-11421-2026
- Evaluation of calibration strategies for accurate δ13CH4 measurements in dry and humid air J. Li et al. https://doi.org/10.5194/amt-19-1763-2026
- Six years of continuous carbon isotope composition measurements of methane in Heidelberg (Germany) – a study of source contributions and comparison to emission inventories A. Hoheisel & M. Schmidt https://doi.org/10.5194/acp-24-2951-2024
- Measurement report: Mobile measurements to estimate urban methane emissions in Tokyo T. Umezawa et al. https://doi.org/10.5194/acp-25-18015-2025
- Underestimation of Thermogenic Methane Emissions in New York City J. Pitt et al. https://doi.org/10.1021/acs.est.3c10307
- Uncertainties in Calibration of an Optical Spectrometer for Measuring Isotope Ratios in Methane C. Rennick et al. https://doi.org/10.1021/acsmeasuresciau.5c00094
- 30-Year Greenhouse Gas Changes in Megacities Driven by Emission Reduction Policies: A Case Study of Beijing Y. Wang et al. https://doi.org/10.1021/acs.est.6c07843
- Methane Source Attribution in the UK Using Multi‐Year Records of CH4 and δ13C C. Woolley Maisch et al. https://doi.org/10.1029/2023JD039098
- Achieving the Global Methane Pledge through key pathways in inter-country production and consumption networks using feasible technologies at minimum cost X. Liu et al. https://doi.org/10.1016/j.jclepro.2026.148985
- Partitioning anthropogenic and natural methane emissions in Finland during 2000–2021 by combining bottom-up and top-down estimates M. Tenkanen et al. https://doi.org/10.5194/acp-25-2181-2025
- 1.645 µm differential absorption lidar measurements of atmospheric methane using an Er:YAG laser D. Edouart et al. https://doi.org/10.5194/amt-19-4875-2026
- Observations-Based Approach to the Estimation of the Oxidizing Capacity of the Atmosphere of Central London over the 2000–2024 Period M. Khan et al. https://doi.org/10.1021/acs.jpca.6c02946
- Estimation of Anthropogenic CH4 and CO2 Emissions in Taiyuan‐Jinzhong Region: One of the World's Largest Emission Hotspots C. Hu et al. https://doi.org/10.1029/2022JD037915
- Developing calibration and measurement capabilities for atmospheric CH4 stable isotope ratios at NMIs/DIs: metrology for global comparability A. Srivastava et al. https://doi.org/10.1088/1681-7575/adcfa8
- Seasonal and Diurnal Variations in Greenhouse Gas Methane (CH4) in a Rural Area of Rome (Italy) A. Ianniello et al. https://doi.org/10.3390/atmos17020159
- Radiocarbon as a tracer of the fossil fraction of regional carbon monoxide emissions L. Blyth et al. https://doi.org/10.1088/1748-9326/ad8248
- Radiocarbon Measurements Reveal Underestimated Fossil CH4 and CO2 Emissions in London G. Zazzeri et al. https://doi.org/10.1029/2023GL103834
- Dense and diverse regional methane sources characterized using a tiered, dual-tracer measurement strategy A. Moyes et al. https://doi.org/10.1016/j.atmosenv.2025.121270
Saved (final revised paper)
Latest update: 21 Sep 2026
Short summary
Continuous measurements of atmospheric methane concentrations and its carbon-13 isotope have been made in central London since early 2018. These measurements were used to evaluate methane emissions reported in global and UK-specific emission inventories for the London area. Compared to atmospheric methane measurements from March 2018 to October 2020, both inventories are under-reporting natural gas leakage for the London area.
Continuous measurements of atmospheric methane concentrations and its carbon-13 isotope have...
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