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Improved global air quality health index reveals ozone and nitrogen dioxide as main drivers of air-pollution-related acute mortality.
One Earth 8:101488 (2025)
Ambient air pollutants are leading contributors to global mortality. Despite the well-established risks, most studies have relied on single-pollutant models in limited regions, leaving the combined effects and individual contributions of pollutants unclear, particularly across countries. Here, we integrate daily mortality and air pollutant (nitrogen dioxide [NO2], ozone [O3], fine particulate matter, and sulfur dioxide) data from 482 cities in 12 countries/territories from 1998 to 2021 to assess the joint mortality risks and identify the main contributing pollutant through an air quality health index of multi-pollutant constrained groupwise additive models (AQHI-Multi). AQHI-Multi outperformed commonly used air quality indices in capturing the overall mortality risks. O3 and NO2 were the leading contributors (accounting for over 70% across countries/territories), with O3's share increasing slightly to moderately in most countries/territories. These findings highlight the need for developing air quality indices using advanced multi-pollutant models and the emerging global significance of targeted control of O3 and NO2.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
ISSN (print) / ISBN
2590-3330
e-ISSN
2590-3322
Zeitschrift
One Earth
Quellenangaben
Band: 8,
Heft: 11,
Artikelnummer: 101488
Verlag
Elsevier
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Epidemiology (EPI)