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Feron S, Cordero RR, Damiani A, Oyola P, Ansari T, Pedemonte JC, Wang C, Ouyang Z, Gallo V. Compound climate-pollution extremes in Santiago de Chile. Sci Rep 2023; 13:6726. [PMID: 37185945 PMCID: PMC10130055 DOI: 10.1038/s41598-023-33890-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 04/20/2023] [Indexed: 05/17/2023] Open
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.
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Affiliation(s)
- Sarah Feron
- Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile
- University of Groningen, Wirdumerdijk 34, 8911 CE, Leeuwarden, The Netherlands
| | - Raúl R Cordero
- Universidad de Santiago de Chile, Av. Bernardo O'Higgins 3363, Santiago, Chile.
| | - Alessandro Damiani
- Center for Environmental Remote Sensing, Chiba University, 1-33 Yayoicho, Inage Ward, Chiba, 263-8522, Japan
| | - Pedro Oyola
- Centro Mario Molina, Antonio Bellet 292, Santiago, Chile
| | - Tabish Ansari
- Research Institute for Sustainability - Helmholtz Centre Potsdam (RIFS), Berliner Str. 130, 14467, Potsdam, Germany
| | - Juan C Pedemonte
- School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Chenghao Wang
- School of Meteorology & Department of Geography and Environmental Sustainability, University of Oklahoma, 120 David L. Boren Blvd. Suite 5220, Norman, OK, 73072, USA
- Department of Geography and Environmental Sustainability, University of Oklahoma, Norman, OK, 73019, USA
| | - Zutao Ouyang
- Department of Earth System Science, Stanford University, Stanford, CA, 94305-2210, USA
| | - Valentina Gallo
- University of Groningen, Wirdumerdijk 34, 8911 CE, Leeuwarden, The Netherlands
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