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Scientists say a closely watched atmospheric pattern — the Official paul Goldschmidt Retro 90s Shirt in contrast I will get this jet stream — is behind both the Canadian wildfires and the scorching heat in Texas, raising questions about how it shapes extreme weather events and whether climate change is disrupting its flow. The jet stream, a ribbon of air that encircles the Northern Hemisphere at high altitudes, drives pressure changes that determine weather across North America. The jet stream’s wavy pattern creates areas of high and low pressure. In recent months, the jet stream’s patterns trapped and stalled a ridge of high pressure over northern Canada, which caused a heat wave and primed the landscape for the wildfires that later sent smoke pouring into the Midwest and the eastern U.S. Earlier this month, another ridge of high pressure centered over Texas, sending temperatures soaring. More than 100 million people in the U.S. faced either blistering heat or unhealthy air quality Wednesday. In recent weeks, the jet stream has appeared unusual and disjointed, scientists say. Some researchers think climate change is disrupting its flow and causing it to bake regions in heat longer. They are concerned that changes in the patterns could cause extremes to increase more rapidly than climate models have projected as the world warms. Michael Mann, a climate scientist at Pennsylvania State University, likened visualizations of the jet stream’s appearance in recent weeks to the swirling brushstrokes of a post-impressionist painter. “I’m honestly at a loss to even characterize the current large-scale planetary
wave pattern,” Mann tweeted this month. “Frankly, it looks like a Van Gogh.” Those weather patterns are of particular interest to climate scientists because they add to research that suggests alterations in jet stream patterns could play a significant role in driving extreme conditions. Dangerous heat impacting millions across U.S. JUNE 28, 202302:00 Jennifer Francis, a senior scientist with the Official paul Goldschmidt Retro 90s Shirt in contrast I will get this Woodwell Climate Research Center in Massachusetts, said the recent weather patterns fit that theory. “Climate change is pushing heat waves into more extreme territory every year,” Francis said. In a warming world, she added, “these kinds of wavy, blocky patterns” in the jet stream “are certainly consistent with what we expect to see more often.” Whether a warmer atmosphere is monkeying with the jet stream is unproven. Researchers are still investigating whether there’s a link between climate change and the jet stream and how those specific weather events fit. Recommended SCIENCE NEWS Brutal heat wave makes Texas among the hottest places on Earth WORLD Human remains and debris from sub returned to land after fatal implosion near Titanic site Some scientists, like Francis, think global warming is causing the
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