Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 23
Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-18015-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-25-18015-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 23
Measurement report
 | 
09 Dec 2025
Measurement report |  | 09 Dec 2025

Measurement report: Mobile measurements to estimate urban methane emissions in Tokyo

Taku Umezawa, Yukio Terao, Masahito Ueyama, Satoshi Kameyama, Mark Lunt, and James Lawrence France

Viewed

Total article views: 2,089 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,653 363 73 2,089 66 71
  • HTML: 1,653
  • PDF: 363
  • XML: 73
  • Total: 2,089
  • BibTeX: 66
  • EndNote: 71
Views and downloads (calculated since 29 Jul 2025)
Cumulative views and downloads (calculated since 29 Jul 2025)

Viewed (geographical distribution)

Total article views: 2,089 (including HTML, PDF, and XML) Thereof 2,053 with geography defined and 36 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 14 Mar 2026
Download
Short summary
Effective mitigation actions require accurate understanding of methane emission characteristics in cities. We conducted atmospheric methane and ethane measurements using a vehicle in the world’s largest megacity, Tokyo, to identify locations and types of emissions and to examine preliminary estimates of their magnitudes. Waste sectors and fugitive natural gas emissions were found to be the major urban sources, and our data suggested need of improved accounting of natural gas related emissions.
Read more
Share
Special issue
Greenhouse gas monitoring in the Asia–Pacific region...
Altmetrics
Final-revised paper
Preprint