Inserm, France Cohortes, Paris, France.
ISGlobal, Barcelona, Spain.
Nat Med. 2024 Jun;30(6):1732-1738. doi: 10.1038/s41591-024-02976-x. Epub 2024 Jun 3.
Ground-level ozone (O) is a harmful air pollutant formed in the atmosphere by the interaction between sunlight and precursor gases. Exposure to current O levels in Europe is a major source of premature mortality from air pollution. However, mitigation actions have been mainly designed and implemented at the national and regional scales, lacking a comprehensive assessment of the geographic sources of O pollution and its associated health impacts. Here we quantify both national and imported contributions to O and their related mortality burden across 813 contiguous regions in 35 European countries, representing about 530 million people. Imported O contributed to 88.3% of all O-attributable deaths (intercountry range 83-100%). The greatest share of imported O had its origins outside the study domain (that is, hemispheric sources), which was responsible for 56.7% of total O-attributable mortality (range 42.5-87.2%). It was concluded that achieving the air-quality guidelines set out by the World Health Organization and avoiding the health impacts of O require not only the implementation of national or coordinated pan-European actions but also global strategies.
地面臭氧（O）是一种在大气中由阳光和前体气体相互作用形成的有害空气污染物。欧洲目前的臭氧水平是导致空气污染导致过早死亡的主要原因。然而，缓解措施主要在国家和地区层面设计和实施，缺乏对臭氧污染的地理来源及其相关健康影响的全面评估。在这里，我们量化了 35 个欧洲国家的 813 个连续地区的臭氧及其相关死亡负担的国家和进口贡献，这些地区代表了约 5.3 亿人。进口臭氧导致了所有臭氧相关死亡的 88.3%（国与国之间的范围为 83-100%）。进口臭氧的最大份额来自研究区域以外（即半球源），占总臭氧相关死亡的 56.7%（范围为 42.5-87.2%）。研究结论认为，要实现世界卫生组织设定的空气质量标准并避免臭氧造成的健康影响，不仅需要实施国家或协调的泛欧行动，还需要采取全球战略。
