Atmospheric health burden across the century and the accelerating impact of temperature compared to pollution | Atmospheric health burden across the century and the accelerating impact of temperature compared to pollution
2024
Pozzer, Andrea | Steffens, Brendan | Proestos, Yiannis | Sciare, Jean | Akritidis, Dimitris | Chowdhury, Sourangsu | Burkart, Katrin | Bacer, Sara
Anthropogenic emissions alter atmospheric composition and therefore the climate, with implications for air pollution- and climate-related human health. Mortality attributable to air pollution and non-optimal temperature is a major concern, expected to shift under future climate change and socioeconomic scenarios. In this work, results from numerical simulations are used to assess future changes in mortality attributable to long-term exposure to both non-optimal temperature and air pollution simultaneously. Here we show that under a realistic scenario, end-of-century mortality could quadruple from present-day values to around 30 (95% confidence level:12-53) million people/year. While pollution-related mortality is projected to increase five-fold, temperature-related mortality will experience a seven-fold rise, making it a more important health risk factor than air pollution for at least 20% of the world’s population. These findings highlight the urgent need to implement stronger climate policies to prevent future loss of life, outweighing the benefits of air quality improvements alone.
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