Synergistic reduction of PM2.5 and CO2 in Chinese cities: Spatiotemporal coupling characteristics and driving mechanisms

Key Points

• Significant reductions in PM2.5 and CO2 levels were observed across various Chinese cities, indicating effective pollution control measures.
• In some cities, reductions in PM2.5 dropped by 15% and CO2 emissions by 10%, highlighting measurable improvements in air quality.
• The assessment involved spatiotemporal coupling analysis, using environmental data from various urban centers in China.
• These findings suggest that integrated strategies may enhance air quality management, prompting global interest in pollution mitigation.