Nat. Sustain. | 印度近期 PM2.5 空气质量的改善得益于气象变化

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Recent PM2.5 air quality improvements in India benefited from meteorological variation （ 由于标题字数限制， 中文标题为自翻，以原标题为准） Abstract Improving air quality amid rapid industrialization and population growth is a huge challenge for India. To tackle this challenge, the Indian government implemented the National Clean Air Programme (NCAP) to reduce ambient concentrations of particulate matter with diameters less than 2.5 μm (PM2.5) and 10 μm (PM10) in hundreds of non-attainment cities that failed to meet the national ambient air quality standards. Here we evaluate the efficacy of the NCAP using data from the national air quality monitoring network combined with regional model simulations. Our results show an 8.8% yr−1 decrease in annual PM2.5 pollution in the six non-attainment cities with continuous air pollution monitoring since 2017. Four of these six cities achieved over 20% reductions in PM2.5 pollution by 2022 relative to 2017, there ………………………………