Temporal variations of local traffic CO₂ emissions and its relationship with CO₂ flux in Beijing, China

Cities are the main source of CO₂. Traffic is one of the most important sources of CO₂ emissions in urban areas. One-year CO₂ flux and 36-days traffic flow data were collected by field monitoring in 2014 at the study area. The accurate traffic CO₂ emissions on 30-min scale were calculated by the localized MOVES model. The annual emissions were 4139.19 Mg. The traffic CO₂ emissions showed a “double-peak” diurnal pattern, with morning peak of 705.14 kg 30 min−¹ (8:00–8:30) and the evening peak of 788.40 kg/30 min−¹ (7:30–18:00). The tail number limited measure in Beijing has reached certain extent, with emissions by limited tail number as follows: 1 or 6 (11.03 Mg/d) < 3 or 8 (11.88 Mg/d) < 4 or 9 (12.13 Mg/d) < 2 or 7 (12.32 Mg/d) < 5 or 0 (12.57 Mg/d). The approach to exploring the relationship with traffic CO₂ emissions and CO₂ flux is modified from the perspective of spatial boundary definition and unit unification. Traffic CO₂ emissions had significantly positive effects on the CO₂ flux. The absolute values of the standard coefficients were in the following order: for the whole year in 2014, temperature (−0.316) > radiation (−0.152) > traffic CO₂ emissions (0.107); for the plant growing season, radiation (−0.254) > temperature (−0.130) > traffic CO₂ emissions (0.105).

• Record URL:
  • https://doi.org/10.1016/j.trd.2018.10.007
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S1361920917310003
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/13619209
• Supplemental Notes:
  • © 2018 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Li, Yu
  • Zheng, Ji
  • Dong, Suocheng
  • Wen, Xuefa
  • Jin, Xueting
  • Zhang, Leiming
  • Peng, Xiao
• Publication Date: 2019-2

Language

• English

Media Info

• Media Type: Web
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 1-15
• Serial:
  • Transportation Research Part D: Transport and Environment
  • Volume: 67
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 1361-9209
  • Serial URL: http://www.sciencedirect.com/science/journal/13619209

Subject/Index Terms

• TRT Terms: Carbon dioxide; Daily; Exhaust gases; Field studies; Traffic data; Traffic flow; Urban areas
• Identifier Terms: Motor Vehicle Emission Simulator (MOVES)
• Uncontrolled Terms: Temporal variations
• Geographic Terms: Beijing (China)
• Subject Areas: Environment; Highways; Planning and Forecasting;

Filing Info

• Accession Number: 01687655
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 4 2018 10:11AM