ArticleProceedings of the National Academy of Sciences of the United States of America2025
Large role of anthropogenic climate change in driving smoke concentrations across the western United States from 1992 to 2020.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
2 citing papers in PubMed.
- Climate change, environmental exposures, and pediatric asthma exacerbations: air pollution, temperature, and relative humidity.Pediatric research · 2026Review
- Large role of anthropogenic climate change in driving smoke concentrations across the western United States from 1992 to 2020.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
Wildfire activity has increased dramatically in the western United States over the last three decades, having a significant impact on air quality and human health. However, quantifying the drivers of trends in wildfires and subsequent smoke concentrations is challenging, as both natural variability (NV) and anthropogenic climate change (ACC) play important roles. Here, we devise an approach involving observed meteorology and vegetation and a range of models to determine the relative roles of ACC and NV in driving burned area across the western United States. We also examine the influence of ACC on smoke concentrations. We estimate that ACC accounts for 33 to 82% of observed total burned area, depending on the ecoregion, yielding 65% of total fire emissions on average across the western United States from 1992 to 2020. In all ecoregions except Mediterranean California, ACC contributes to a greater percentage of burned area in lightning-ignited wildfires than in human-ignited wildfires. On average, ACC contributes 49% to smoke PM
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