2023-07-10 ドイツ・サステナビリティ研究所(IASS)
◆研究結果は、将来的な熱波の頻度と激しさの増加により、低所得者層の成人の死亡率が増加する可能性があることを示しています。これらの調査結果は、公衆衛生への影響を最小限に抑えるための適応戦略の必要性を強調し、健康警報システムの開発や、複合熱波-オゾン汚染の人間の健康への影響に関する理解の向上が求められていると述べています。
＜関連情報＞
- https://www.rifs-potsdam.de/en/news/heat-ozone-extremes-affect-mortality
- https://www.nature.com/articles/s41598-023-33890-w
サンティアゴ・デ・チリの気候汚染複合極端化 Compound climate-pollution extremes in Santiago de Chile
Sarah Feron,Raúl R. Cordero,Alessandro Damiani,Pedro Oyola,Tabish Ansari,Juan C. Pedemonte,Chenghao Wang,Zutao Ouyang & Valentina Gallo
Scientific Reports Published:25 April 2023
DOI:https://doi.org/10.1038/s41598-023-33890-w
Abstract
Cities in the global south face dire climate impacts. It is in socioeconomically marginalized urban communities of the global south that the effects of climate change are felt most deeply. Santiago de Chile, a major mid-latitude Andean city of 7.7 million inhabitants, is already undergoing the so-called “climate penalty” as rising temperatures worsen the effects of endemic ground-level ozone pollution. As many cities in the global south, Santiago is highly segregated along socioeconomic lines, which offers an opportunity for studying the effects of concurrent heatwaves and ozone episodes on distinct zones of affluence and deprivation. Here, we combine existing datasets of social indicators and climate-sensitive health risks with weather and air quality observations to study the response to compound heat-ozone extremes of different socioeconomic strata. Attributable to spatial variations in the ground-level ozone burden (heavier for wealthy communities), we found that the mortality response to extreme heat (and the associated further ozone pollution) is stronger in affluent dwellers, regardless of comorbidities and lack of access to health care affecting disadvantaged population. These unexpected findings underline the need of a site-specific hazard assessment and a community-based risk management.
