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With climate change contributing to an increase in frequency and severity of extreme weather events like wildfires, droughts, and hurricanes, there is a growing need for coordinated research efforts to understand the impact of these events on human health. Specialized research frameworks can help interdisciplinary teams organize and visualize complex exposure-health pathways, identify knowledge gaps, and enhance coordination and communication across diverse groups of stakeholders. This article describes the development and application of a conceptual framework for wildfire-related exposures and human health outcomes. This framework serves as a tool for integrating data resources and mapping known and hypothesized connections, between complex wildfire exposures and human health outcomes, across the lifecycle of a wildland urban interface (WUI) fire. We also demonstrate the utility and flexibility of this framework for disaster research settings through two example applications. The first demonstrates an application for studying WUI fires and respiratory health outcomes, and the second example shows how the framework can be expanded to visualize exposure and health modeling with potential biomarkers of exposure and effect. Our GeoHealth Framework for WUI Fires illustrates complex linkages between wildfire related exposures and health outcomes and highlights areas for future study. Given the destruction and complexity of WUI fires, this framework provides an important resource that can assist with evaluating these complex exposure-health relationships, guiding and coordinating data collection, and informing communities and decision-makers to improve response, recovery, and future preparedness for such events in the United States and globally.
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http://dx.doi.org/10.1029/2025GH001380 | DOI Listing |
Nat Commun
August 2025
Department of Mechanical Engineering, University of California, Berkeley, CA, USA.
The destructive impacts of wildfires on people, property and the environment have dramatically increased, especially in the Wildland-Urban Interface (WUI) in California. In these areas structures are threatened by both approaching flames and lofted embers which spread fire into and within communities. While independent factors influencing structure fire protection are well known, their combined effects remain largely unquantified, limiting the accuracy of risk assessments and mitigation strategies.
View Article and Find Full Text PDFEnviron Sci Technol
August 2025
Environmental Engineering Program, University of Colorado Boulder, Boulder, Colorado 80309, United States.
Residual ashes from wildland-urban interface (WUI) fires pose chemical hazards to water bodies adjacent to burned structures. However, the full extent of the pyrogenic contaminants present in postfire residues remains underexplored. To address this knowledge gap, this study employed a bottom-up approach by combusting representative WUI materials, both individually and in mixtures, followed by water extraction of the resulting ashes.
View Article and Find Full Text PDFEnviron Sci Technol
July 2025
Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.
Emissions from eight common wildland-urban interface (WUI) fuels were quantified using Fourier-transform infrared spectroscopy under varying oxygen concentrations (0, 14, 21%) and heat fluxes (25, 50 kW/m). Emission factors for carbon monoxide (CO), carbon dioxide (CO), and other gaseous and particulate effluents varied significantly across these conditions. By implementing a new Toxicity Score method, polyvinyl chloride was identified as the most hazardous fuel, followed by asphalt shingles and vinyl plank flooring under smoldering conditions at 21% oxygen concentration.
View Article and Find Full Text PDFWith climate change contributing to an increase in frequency and severity of extreme weather events like wildfires, droughts, and hurricanes, there is a growing need for coordinated research efforts to understand the impact of these events on human health. Specialized research frameworks can help interdisciplinary teams organize and visualize complex exposure-health pathways, identify knowledge gaps, and enhance coordination and communication across diverse groups of stakeholders. This article describes the development and application of a conceptual framework for wildfire-related exposures and human health outcomes.
View Article and Find Full Text PDFPhilos Trans R Soc Lond B Biol Sci
April 2025
West Florida Research and Education Center, University of Florida, Milton, FL, USA.
Fire increasingly conflicts with the built environment. The wildland-urban interface (WUI) describes areas where vegetation near the built environment increases wildfire hazard. In the United States, attention concentrates on WUI in forested areas, but human populations are extending into rangelands.
View Article and Find Full Text PDF