Deadly flooding is hitting several countries right now, and scientists warn this will become increasingly common with climate change
a reality right now. The additional warming that scientists predict is coming will only make it worse.
That’s because a warmer atmosphere holds more moisture, which results in storms dumping more precipitation that can have deadly outcomes. Pollutants, especially carbon dioxide and methane, are heating up the atmosphere. Instead of allowing heat to radiate away from Earth into space, they hold onto it.is not the cause of storms unleashing the rainfall, these storms are forming in an atmosphere that is becoming warmer and wetter.
“Sixty-eight degrees Fahrenheit can hold twice as much water as 50 degrees Fahrenheit,” said Rodney Wynn, a meteorologist at the National Weather Service in Tampa Bay. “Warm air expands and cool air contracts. You can think of it as a balloon – when it’s heated the volume is going to get larger, so therefore it can hold more moisture.”
For every 1 degree Celsius, which equals 1.8 degrees Fahrenheit, the atmosphere warms, it holds approximately 7% more moisture. According to NASA, the average global temperature has increased by at least 1.1 degrees Celsius since 1880.“When a thunderstorm develops, water vapor gets condensed into rain droplets and falls back down to the surface.
“As the climate gets warmer we expect intense rain events to become more common, it’s a very robust prediction of climate models,” Soden added. “It’s not surprising to see these events happening, it’s what models have been predicting ever since day one.”
Belgique Dernières Nouvelles, Belgique Actualités
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