Atmospheric measurements results archive, MEMO2 Greater London

@misc{https://doi.org/10.18160/sbsr-h52h,
  doi = {10.18160/SBSR-H52H},
  url = {https://meta.icos-cp.eu/objects/xf9gB-mVhSkdr6f9YhAqiM-h},
  author = {Fernandez, Julianne and Bakkaloglu, Semra and Fisher, Rebecca and France, James and Lanoisellé, Mathias and Lowry, David and Maazallahi, Hossein and Nisbet, Euan and Nisbet-Jones, Peter and Röckmann, Thomas and Vogel, Felix},
  keywords = {ATMOSPHERIC METHANE, GAS EXPLOSIONS/LEAKS, METHANE EMISSIONS, NATURAL GAS PRODUCTION/USE, STABLE ISOTOPES, emission attribution, greenhouse gas, mobile observations},
  title = {Atmospheric measurements results archive, MEMO2 Greater London, 2018-05-03–2019-10-25},
  publisher = {ICOS ERIC -- Carbon Portal},
  year = {2023},
  copyright = {ICOS CCBY4 Data Licence}
}

TY  - DATA
T1  - Atmospheric measurements results archive, MEMO2 Greater London, 2018-05-03–2019-10-25
AU  - Fernandez, Julianne
AU  - Bakkaloglu, Semra
AU  - Fisher, Rebecca
AU  - France, James
AU  - Lanoisellé, Mathias
AU  - Lowry, David
AU  - Maazallahi, Hossein
AU  - Nisbet, Euan
AU  - Nisbet-Jones, Peter
AU  - Röckmann, Thomas
AU  - Vogel, Felix
DO  - 10.18160/SBSR-H52H
UR  - https://meta.icos-cp.eu/objects/xf9gB-mVhSkdr6f9YhAqiM-h
AB  - This data presents the first city-wide direct street-level methane (CH4) measurements and emission quantification of Greater London natural gas utilities. Extensive vehicle surveys were conducted between 2018 and 2019 measuring street-level mixing ratios of CH4 and ethane (C2H6) across Greater London. Leak indicators and emission rates were detected and calculated with an algorithm previously developed for mobile surveys. Air samples were collected within elevated plumes of CH4 and δ13CCH4 source signatures determined by stable isotopic composition. Every vehicle-accessible kilometre square in Greater London was covered, which included ~2930 km of the street network, primarily on local arterial and collector roads. Three leak indications per kilometre and an overall emission factor of 0.42 L min-1 km-1 were determined. δ13C signatures and C2:C1 ratios indicated natural gas sources contributed to ~90% of the emissions. Total estimated CH4 emission range (1900 to 2542 tonnes CH4 Yr-1) was comparable to the annual domestic gas consumption of roughly 3000 homes. Data demonstrates the need for targeted mitigation of the larger emissions as ~5% of locations are responsible for ~50% of the total emissions. Prioritization of repair using comprehensive emissions mapping can be a useful greenhouse gas mitigation strategy as the UK seeks to achieve its “Net Zero” emission target.
KW  - ATMOSPHERIC METHANE
KW  - GAS EXPLOSIONS/LEAKS
KW  - METHANE EMISSIONS
KW  - NATURAL GAS PRODUCTION/USE
KW  - STABLE ISOTOPES
KW  - emission attribution
KW  - greenhouse gas
KW  - mobile observations
PY  - 2023
PB  - ICOS ERIC -- Carbon Portal
ER  -