Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 839, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2022.156274
Keywords
City level; Assessment; CO(2 )emission; Air quality; China
Categories
Funding
- National Natural Science Foundation of China [72074154]
- Chinese city [72140005]
- Integrated research on pathways [72171157]
- Impact assessment of PM2.5 pollution control from regional equality perspective
Ask authors/readers for more resources
China is facing challenges of air pollution and climate change, as PM2.5 concentrations have decreased in some cities while O-3 concentrations and CO2 emissions have increased, indicating a lack of synergy in air pollution control and CO2 mitigation.
China is facing dual challenges of air pollution and climate change. By using city-level data, we comprehensively assessed air quality and CO2 emission changes from 2015 to 2019 for 335 Chinese cities. We selected important regions for air pollution control and categorized all cities into different classes according to their development levels. Our novel approach revealed new insights on different patterns of changes of PM2.5, O-3, and CO2 by region and city class. We found that PM2.5 concentrations decreased remarkably due to mandatory city-level reduction targets, especially in the Beijing-Tianjin-Hebei (-27%) region. Nonetheless, O-3 concentrations and CO2 emissions increased in 91% and 69% of Chinese cities, respectively. Observed CO2 emission reductions in more developed cities were mainly due to prominent energy intensity reduction and energy structure improvement. Our study indicates a lack of synergy in air pollution control and CO2 mitigation under current policies in China. To address both challenges holistically, we suggest setting mandatory city-level CO2 emission reduction targets and reinforcing clean energy and energy efficiency measures.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available