Back to Search
Start Over
Switching to electric vehicles can lead to significant reductions of PM2.5 and NO2 across China
- Source :
- One Earth. 4:1037-1048
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Summary Transportation contributes to around one-fifth of global greenhouse gas emissions, while also causing severe air pollution. The conversion to electric vehicles (EVs) represents a major path to decarbonize the transport sector, with potentially significant co-benefits for human health. However, the scale of such co-benefits largely remains an empirical question and lacks observational evidence. The full lockdown in China during the coronavirus disease 2019 (COVID-19) pandemic provides an unprecedented real-world experiment to evaluate emission reduction potentials of a large-scale transition to EVs. Here, we utilize ground and satellite observations of air quality during the full lockdown to constrain predictions of a comprehensive chemical transport model and find that the substantial traffic reductions are near-linearly linked to reductions of PM2.5 (particles with an aerodynamic diameter ≤2.5 μm) and NO2. A further extrapolation of a full conversion to EVs shows a significant reduction of PM2.5 (30%–70%) and NO2 (30%–80%) in most of China. Our findings provide fact-based evidence of potential environmental benefits generated by fully switching to EVs.
- Subjects :
- Chemical transport model
Coronavirus disease 2019 (COVID-19)
Air pollution
Environmental economics
medicine.disease_cause
Human health
Lead (geology)
Greenhouse gas
Earth and Planetary Sciences (miscellaneous)
medicine
Environmental science
China
Air quality index
General Environmental Science
Subjects
Details
- ISSN :
- 25903322
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- One Earth
- Accession number :
- edsair.doi...........ea8c74e15656e82592bac14045fa7a76