Developing China's roadmap for air quality improvement: A review on technology development and future prospects

Area of Science:

• Environmental Science
• Policy Analysis
• Atmospheric Chemistry

Background:

• China's air pollution control strategy evolved from acid rain and NOx to PM2.5 and now ozone.
• Significant progress achieved in reducing SO2 and PM2.5 concentrations.
• New national targets for 2035 and carbon neutrality goals necessitate integrated air quality and climate mitigation.

Approach:

• Systematic review of technical systems for air quality roadmapping.
• Integration of research from China's National Key R&D Program.
• Focus on target setting, quantitative analysis, and pathway optimization.

Key Points:

• Developed techniques for mid- and long-term air quality target setting.
• Established methods for quantitative analysis of emission reduction targets.
• Optimized pathways for achieving emission reduction targets.

Conclusions:

• Experience informs China's air quality roadmap reformation.
• Addresses synergistic mitigation of PM2.5 and ozone.
• Integrates air quality improvement with climate change mitigation strategies.