Preprints
https://doi.org/10.5194/essd-2024-101
https://doi.org/10.5194/essd-2024-101
25 Apr 2024
 | 25 Apr 2024
Status: this preprint is currently under review for the journal ESSD.

Modeling fuel-, vehicle type-, and age-specific CO2 emissions from global on-road vehicles, 1970–2020

Liu Yan, Qiang Zhang, Kebin He, and Bo Zheng

Abstract. Vehicles are among the most important contributors to global anthropogenic CO2 emissions. However, the lack of fuel-, vehicle type-, and age-specific information about global on-road CO2 emissions in existing datasets, which are available only at the sector level, makes these datasets insufficient to support the establishment of emission mitigation strategies. Thus, a fleet turnover model is developed in this study, and CO2 emissions from global on-road vehicles from 1970 to 2020 are estimated for each country. Here, we analyze the evolution of the global vehicle stock over 50 years, identify the dominant emission contributors by vehicle and fuel type, and further characterize the age distribution of on-road CO2 emissions. We find that trucks accounted for less than 5 % of global vehicle ownership but represented more than 20 % of on-road CO2 emissions in 2020. The contribution of diesel vehicles to global on-road CO2 emissions doubled during the 1970–2020 period, driven by the shift in the fuel-type distribution of vehicle ownership. The proportion of CO2 emissions from vehicles in developing countries such as China and India in terms of global emissions from newly registered vehicles significantly increased after 2000, but global CO2 emissions from vehicles that survived more than 15 years in 2020 still originated mainly from developed countries such as the United States and countries in the European Union.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Liu Yan, Qiang Zhang, Kebin He, and Bo Zheng

Status: open (until 10 Jun 2024)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2024-101', Anonymous Referee #1, 20 May 2024 reply
  • RC2: 'Comment on essd-2024-101', Anonymous Referee #2, 20 May 2024 reply
Liu Yan, Qiang Zhang, Kebin He, and Bo Zheng

Data sets

Fuel-, vehicle type-, and age-specific CO2 emissions from global on-road vehicles Liu Yan, Qiang Zhang, Kebin He, and Bo Zheng https://doi.org/10.6084/m9.figshare.24548008.v5

Liu Yan, Qiang Zhang, Kebin He, and Bo Zheng

Viewed

Total article views: 289 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
234 31 24 289 15 21 21
  • HTML: 234
  • PDF: 31
  • XML: 24
  • Total: 289
  • Supplement: 15
  • BibTeX: 21
  • EndNote: 21
Views and downloads (calculated since 25 Apr 2024)
Cumulative views and downloads (calculated since 25 Apr 2024)

Viewed (geographical distribution)

Total article views: 325 (including HTML, PDF, and XML) Thereof 325 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 27 May 2024
Download
Short summary
A new database of fuel-, vehicle type-, and age-specific CO2 emissions from global on-road vehicles from 1970 to 2020 is developed with the fleet turnover model built in this study. Based on this database, the evolution of the global vehicle stock over 50 years is analyzed, the dominant emission contributors by vehicle and fuel type is identified, and the age distribution of on-road CO2 emissions is further characterized.
Altmetrics