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Scientists uncover combustion mechanism to better predict warming by wildfires

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 Scientists have uncovered key attributes of so-called “brown carbon” from wildfires, airborne atmospheric particles that may have influenced current climate models that failed to take the material’s warming effects into account. The work was described by a collaborative team of researchers from Los Alamos National Laboratory, Carnegie Mellon University and the University of Montana in the journal Nature Geosciences this week.
“Biomass burning and wildfires emit fine particulates that are toxic to humans and can warm or cool climate. While their toxicity is certain, their specific climatic effects remain unclear and are a hot research topic,” said Manvendra Dubey, a senior Los Alamos climate scientist. “Smoke from wildfires accounts for one-third of the Earth’s ‘black’ carbon — the familiar charred particles that are associated with fires with large flames. While black carbon is relatively simple — solely consisting of carbon — brown carbon contains a complex soup of organic material, making it difficult to identify, characterize and model.”


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