A new kind of particle in wildfire smoke is warming the planet a lot more than we realized.
Researchers collected smoke samples of three wildfires burning in Arizona, Idaho and Oregon in July and August of 2019. Results show a new type of particle, termed dark brown carbon, could be a significant contributor to global warming.
These results indicate that wildfires, which are expected to become harsher and more frequent in the coming years due to human-inducedUsing NASA's Douglas DC-9 aircraft, which is a 54-year-old quadjet that was turned into a flying science lab, scientists performed smoke analysis of three specific lightning-caused fires. All three had burnt large swaths of land in the western United States in 2019 — the Shady Creek in Idaho, Castle and Ikes in Arizona and the 204 Cow of Oregon.
"It's likely that they form similarly to soot in the high-temperature flames along the leading edges of wildfires," Rohan Mishra, an associate professor of mechanical engineering and materials science at Washington University in St. Louis, Missouri and a co-author of the new study, said in aIn July and August of 2019, scientists used instruments onboard NASA's flying science lab to collect smoke samples at about 6.2 miles above ground.
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