Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 7
Articles | Volume 19, issue 7
https://doi.org/10.5194/amt-19-2369-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/amt-19-2369-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 7
Research article
 | 
10 Apr 2026
Research article |  | 10 Apr 2026

Simultaneous measurements of near-surface CO2 and NO2 to monitor the fossil-fuel combustion-derived CO2 in the Greater Tokyo Area

Hitoshi Irie, Masataka Nomoto, Yoshikazu Kamiya, and Yukio Terao

Viewed

Total article views: 2,148 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
1,622 433 93 2,148 64 85
  • HTML: 1,622
  • PDF: 433
  • XML: 93
  • Total: 2,148
  • BibTeX: 64
  • EndNote: 85
Views and downloads (calculated since 06 Jan 2026)
Cumulative views and downloads (calculated since 06 Jan 2026)

Viewed (geographical distribution)

Total article views: 2,148 (including HTML, PDF, and XML) Thereof 2,070 with geography defined and 78 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Saved (final revised paper)

Latest update: 25 Aug 2026
Download
Short summary
Continuous year-round measurements in Chiba, Japan, combining in‑situ CO2 observations with MAX‑DOAS (Multi-Axis Differential Optical Absorption Spectroscopy) NO2, showed that CO2 levels decrease on days with low near-surface NO2. CO2 enhancements quantified using these low-NO2 days correlated strongly with NO₂ and black carbon, indicating that this metric effectively tracks fossil-fuel-derived CO₂. The approach offers a simple, accurate method for monitoring urban CO2 emissions in megacities.
Read more
Share
Special issue
SKYNET – the international network for aerosol, clouds,...