Browsing by Author "Li, Tiantian"
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- Improved global air quality health index reveals ozone and nitrogen dioxide as main drivers of air-pollution-related acute mortalityPublication . Huang, Wenzhong; Li, Tiantian; Masselot, Pierre; Xu, Rongbin; Gasparrini, Antonio; Sera, Francesco; Bell, Michelle L.; Hashizume, Masahiro; Breitner, Susanne; Tong, Shilu; Kan, Haidong; Yang, Zhengyu; Zhang, Yiwen; Yu, Wenhua; Yu, Pei; Zhou, Shuang; Sun, Qinghua; Zhang, Jingwei; Lavigne, Eric; Madureira, Joana; Guo, Yue Leon; Gaio, Vânia; Li, Shanshan; Guo, Yuming; MCC Collaborative Research NetworkAmbient 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 [NO], ozone [O], 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. O and NO were the leading contributors (accounting for over 70% across countries/territories), with O'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 O and NO.