Orkanen Ida kan bli riktigt otäck. I det varma vattnet i gulfen kan den bli en kategori 4 innan den når land i Louisiana.
Den globala uppvärmningen skapar gynnsamma förhållanden för orkaner, eftersom luft och hav värms upp och luften dessutom blir fuktigare. De senaste årens orkaner i USA medfört inte bara starka vindar utan dessutom allvarliga översvämningar.
Enda lösningen är att stoppa utsläppen.
Climate Change is "Supercharging" Tropical Cyclones Like Ida
The proportion of major tropical cyclones has risen, and warmer air temperatures along with rising ocean heat have made them nastier.
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According to NOAA a Category 4 hurricane will cause catastrophic damage: "Well-built framed homes can sustain severe damage with loss of most of the roof structure and/or some exterior walls. Most trees will be snapped or uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months." (Credit: NOAA's National Hurricane Center)
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Between 2020 and 2021, the United States suffered 258 weather disasters, with hurricanes causing the most damage, according to NOAA. The total from these storms: $945.9 billion, with an average cost of almost $21.5 billion per storm. Hurricanes also were responsible for the highest number of U.S. deaths from weather disasters: 6,593 people were killed between 1980 and 2020.
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Monster storms cause enormous damage not only because of their winds. They also dump unimaginable amounts of water. And research shows that thanks to climate change, they've been getting wetter.
That's happening for a number of reasons. First, a warmer atmosphere can carry more moisture. Research shows that for every one degree Celsius (1.8 degrees Fahrenheit) increase in temperature, the atmosphere can hold 7 percent more moisture. So far, the globe has warmed by about 1.1 degrees C since preindustrial times.
A wetter atmosphere is not the only factor making tropical cyclones wetter. Warming seas is another. In fact, rising temperaures invigorate storms in variety of ways.
https://preview.discovermagazine.com/environment/ climate-change-is-supercharging-tropical-cyclones-like-ida