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Storm Barrys threat to New Orleans heightened by climate change   USA News   Al Jazeera

Storm Barrys threat to New Orleans heightened by climate change USA News Al Jazeera

Posted on September 16, 2019 by Walter Gibson


Storm Barrys threat to New Orleans heightened by climate change USA News Al Jazeera Scientists say storm, which is expected to bring heavy rain to Louisiana, is fueled by warm waters in Gulf of Mexico. Tropical Storm Barry, which is expected to flood New Orleans and threaten lives along the Mississippi River in the , is being fueled by warmth in the Gulf of Mexico that was likely exacerbated by climate change, scientists said on Friday. While no single storm can be linked directly to , the trend of warming air and seas around the globe has caused conditions that scientists say will, on average, make storms stronger and rainier. “The real increased threat from a warming climate is an atmosphere thats capable of producing higher intensity precipitation events,” said Jill Trepanier, an expert in extreme climatic and weather events at Louisiana State University. She said warmer air in the Gulf of Mexico will likely add fuel to the storm, while warmer ocean temperatures there will fill it with vast amounts of evaporated water that can lead to dangerous flooding.  Louisiana officials have warned residents that Barry, expected to make landfall on Saturday, could inundate areas along the lower Mississippi with up to 20 inches 51 cm of rain. The lower Mississippi has already been running at flood stage for months after the so called “bomb cyclone” and other storms starting in March that dumped huge volumes of rain on Nebraska, Iowa and Missouri which flowed down the Mississippi and could further feed moisture to Barry, scientists said. “The water over land actually helps the storm,” Kevin Trenberth, a senior scientist at the US National Center for Atmospheric Research, a federally funded office, said about the double whammy.  Residents were ordered to evacuate some nearby areas, but New Orleans Mayor LaToya Cantrell said no evacuations were ordered from the city. Cantrell, a Democrat, said at a news conference she believes climate change is making storms worse. “Its real. Were seeing it through the country and the world.” The city is particularly vulnerable to storms because it is “below sea level, protected by levees and pumping systems that remove rainwater, which cannot drain naturally,” the Environmental Protection Agency said in 2016 on its website, an entry moved to a web archive by the Trump administration. Not all storms will be wetter as a result of climate change, but on average more of them will, scientists said. In a recent record wet storm, Hurricane Harvey flooded the Houston area in 2017, killing 68 people and causing an estimated dollar 125bn in property damage. In 2005, Hurricane Katrina slammed the New Orleans region and killed 1,500 people with high winds and levee bursting . “We might have four or five times as much warming over the coming century as the last, so these kinds of weather events are likely to get much, much worse,” said Andrew Dessler, a climate scientist and professor of atmospheric sciences at Texas A andM University.  Development in the New Orleans region, a major oil hub, has made the area more vulnerable to storms, with the removal of wetlands which help protect coasts. Trepanier said the city has made some advances to protect against storm surge, but when storms meet river flooding it makes for a “more combined and complicated risk.” President , a Republican, has cast doubt on mainstream climate change science and announced his intention to withdraw the US from the 2015 Paris agreement, an international accord to fight climate change, saying it burdens the country with costs.  He boasted about his administrations environmental record at a speech at the White House this week, but did not mention climate change, and he has rolled back Obama era regulations targeting carbon emissions. The EPA, which is in charge of toxic waste sites and was forced to address flooded sites that released dangerous chemicals into waters during Hurricane Harvey, did not immediately respond to a request for comment about Barry. Green group Environment America said there were more than 100 Superfund environmental cleanup sites and 17 oil refineries in the path of the storm.

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