Policy and advanced monitoring synergies to tackle ammonia emission impacts

Ammonia is a critical yet under-regulated driver of global PM 2.5 pollution and ecosystem degradation. This commentary proposes a synergistic framework to bridge the governance gap by integrating advanced monitoring technologies, from satellite retrievals to ground-based sensors, with cross-sectoral policies and economic instruments. This integrated approach enables precise, cost-effective emission control and paves the way for a nitrogen circular economy, offering co-benefits for air quality, climate