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Item type:Publication, Relationship between forest fires and air quality: a study of particulate matter in localities distant from the main emission source(Instituto Internacional de Ecologia (Brazil), 2025-01-01)Wildfires represent a growing threat to air quality in fire-prone regions; however, the spatiotemporal dynamics of pollutant dispersion to distant localities remain inadequately characterized. This study quantifies particulate matter concentrations (PM1.0, PM2.5, PM10) in localities distant from the February 2024 Valparaíso wildfire, evaluating their spatiotemporal variation and association with fire intensity and meteorological parameters using a network of low-cost sensors. Four PurpleAir sensors distributed along the Valparaíso-Santiago corridor (70-120 km) were integrated with meteorological stations and satellite-derived Fire Radiative Power (FRP) data. Analysis of variance revealed significant differences in PM concentrations between pre-fire, during-fire, and post-fire phases, with the proximal station (S1) showing the strongest response. Pearson correlations with False Discovery Rate adjustment demonstrated immediate associations between FRP and PM at S1 (r = 0.71-0.72, p < 0.05), while distal stations (S2-S4) exhibited significant correlations only after applying 1-2 day temporal lags (r = 0.44-0.49, p < 0.05), providing quantitative evidence of regional-scale pollutant transport. These findings establish an empirical foundation for developing early warning systems in fire-prone regions and underscore the necessity of considering temporal lags in air quality management strategies during wildfire events.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Exploring Wildfire Preparedness, Perceptions, and Responses in Western Canada: Insights from Valemount, British Columbia(American Meteorological Society, 2025-10-01)Climate change and decades of fire suppression are increasing the risk of wildfire in many rural and remote communities across Canada. Yet limited research has been done to better understand how these communities experience wildfire risk. For this research, conducted prior to the catastrophic wildfire season of 2023 in British Columbia, we interviewed 20 key informants living in the village of Valemount in the Robson Valley, British Columbia, about their perceptions of wildfire risk, lived experiences, and management approaches. We further explored barriers to and opportunities for future wildfire management. Our findings show that although the direct risk of wildfire impacting the village is increasing, participants mostly focused on the indirect impacts of wildfires such as power outages and the health effects of wildfire smoke. Previous experiences with these impacts, combined with a dependency on regionally managed power systems and limited transport infrastructure, were key catalysts for taking action within the village. However, several barriers, including a lack of community engagement in wildfire fighting, have impeded proactive wildfire management. Participants emphasized the need for increased support for local FireSmart initiatives and legislative changes to enable resident participation in fire suppression and to improve village preparedness. This study enhances our understanding of wildfire impacts on rural communities and outlines strategies to strengthen future wildfire management and resilience.Scopus© Citations 2 3