BUENOS AIRES, Argentina — Human-caused climate change had an important impact on the recent ferocious wildfires that engulfed parts of Chile and Argentina’s Patagonia region, making the extremely high-risk conditions that led to widespread burning up to three times more likely than in a world without global warming, a team of researchers warned on Wednesday. The hot, dry and gusty weather that fed last month’s deadly wildfires in central and southern Chile was made around 200% more likely by human-made greenhouse gas emissions while the high-fire-risk conditions that fueled the blazes still racing through southern Argentina were made 150% more likely, according to World Weather Attribution, a scientific initiative that investigates extreme weather events soon after they happen. That probability will only increase, the experts added, as humans continue to blanket the planet with heat-trapping gases.

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