Reducing global air pollution: the scope for further policy interventions
Markus Amann1, Gregor Kiesewetter1, Wolfgang Schöpp1
1International Institute for Applied Systems Analysis, IIASA, A-2361 Laxenburg, Austria.
Summary
Effective pollution control policies can decouple economic growth from emissions. Ambitious global strategies are needed to significantly improve air quality and reduce premature deaths by 2040.
Area of Science:
- Environmental Science
- Public Health
- Economics
Background:
- Economic growth and pollution control policies have historically been linked.
- Decoupling emission trends from economic growth is increasingly observed globally.
- Current pollution control regulations are insufficient to meet global air quality needs.
Purpose of the Study:
- To assess the potential of combined policies to improve global air quality.
- To project future population exposure to particulate matter (PM2.5).
- To evaluate the co-benefits of air quality improvement measures.
Main Methods:
- Analysis of emission trends and economic growth.
- Modeling of future population exposure to PM2.5 under various policy scenarios.
- Assessment of health impacts and alignment with Sustainable Development Goals.
Main Results:
- Current regulations allow economic growth without significant air quality decline but are insufficient for many regions.
- Ambitious, integrated policies could reduce mean population exposure to PM2.5 by 75% by 2040.
- Proposed measures are technically feasible but require strong political will and address consumption habits.
Conclusions:
- Improved air quality can prevent millions of premature deaths annually.
- Clean air strategies significantly reduce greenhouse gas emissions.
- Implementing these measures aligns with multiple UN Sustainable Development Goals.
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