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1 .This is Scientific American 60-Second Science. I'm Julia Rosen. Got a minute?
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2 .What could fires in Central America have to do with the deadliest outbreak of tornadoes in recent U.S.history?
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3 .More than you might think, according to a new study.
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4 .Researchers found that smoke wafting north from the Gulf of Mexico worsened the already-stormy weather brewing across the southeastern US on April 27, 2011.
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5 .That afternoon, 122 twisters tore across the country, killing 313 people.
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6 ."It's not that the outbreak happened because of the smoke."
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7 .Pablo Saide, of the University of Iowa, and an author of a new study published in the journal Geophysical Research Letters.
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8 ."What's happening is that this smoke, it interacts with clouds and with solar radiation."
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9 .Smoke consists of tiny particles, called aerosols, which can have complicated effects on weather.
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10 .So Saide used a model to explore whether these particles influenced the tornado outbreak of April 27.
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11 .He found smoke made twisters more likely to strike, and more ferocious when they did.
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12 .However, at the moment, weather forecasts don't consider aerosol particles.
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13 ."This is difficult because weather models need to be finished very fast, because you want weather predictions for today, not for tomorrow.
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14 .And including these aerosols makes it slower."
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15 .But Saide thinks it's worth it.
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16 .He says understanding the role of smoke and other airborne particles will help forecasters predict when weather conditions might change from dreary to deadly.
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17 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Julia Rosen.
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