Climate change and its impacts are not just the future: they are now
Everything Is Unprecedented. Welcome To Your Hotter Earth, NPR, REBECCA HERSHER, NATHAN ROTT, LAUREN SOMMER-30 Aug 20,
|
The upshot of climate change is that everyone alive is destined to experience unprecedented disasters. The most powerful hurricanes, the most intense wildfires, the most prolonged heat waves and the most frequent outbreaks of new diseases are all in our future. Records will be broken, again and again. But the predicted destruction is still shocking when it unfolds at the same time. This week, Americans are living through concurrent disasters. In California, more than 200,000 people were under evacuation orders because of wildfires, and millions are breathing smoky air. On the Gulf Coast, people weathered a tropical storm at the beginning of the week. Two days later, about half a million were ordered to evacuate ahead of Hurricane Laura. We’re six months into a global pandemic, and the Earth is on track to have one of its hottest years on record. Climate scientist Camilo Mora of the University of Hawaii says if our collective future were a movie, this week would be the trailer. “There is not a single ending that is good,” he says. “There’s not going to be a happy ending to this movie.” Mora was an author of a study examining all the effects of climate change. The researchers concluded that concurrent disasters will get more and more common as the Earth gets hotter. That means we will live through more weeks like this one — when fires, floods, heat waves and disease outbreaks layer on top of one another. “Keep in mind that all these things are related,” Mora explains. “CO2 is increasing the temperature. As a result, the temperature is accelerating the evaporation of water. The evaporation of water leads to drought that in turn leads to heat waves and wildfires. In places that are humid, that evaporation — the same evaporation — leads to massive precipitation that is then commonly followed by floods.” Disease outbreaks are also more likely. The most recent U.S. National Climate Assessment warns that changing weather patterns make it more likely that insect-borne illnesses will affect the U.S. Climate change is also causing people and animals to move and come in contact with one another in new and dangerous ways. If humans dramatically reduce greenhouse gas emissions immediately, scientists say it will help avoid the most catastrophic global warming scenarios. Worldwide emissions are still rising, and the United States is the planet’s second-largest emitter. Mora says helping people connect the dots between the current disasters and greenhouse gas emissions should be every scientist’s priority. “That’s the million-dollar question,” he says. “How do we speak to people in a way that we get them to appreciate the significance of these problems?” Hurricanes and climate change Climate change is making the air and water hotter, and that means more power for hurricanes. “Whenever you get ocean temperatures that are much above average, you’re asking for trouble,” meteorologist Jeff Masters explains. “And we’ve seen some of the warmest ocean temperatures on record for the Atlantic basin this year.” Hot water is like a battery charger for hurricanes. As a storm moves over hot water, like Hurricane Laura did this week, it captures moisture and energy very quickly. In recent years, scientists have seen evidence that global warming is already making storms more likely to grow large and powerful and more likely to intensify quickly. …….. Scientists have also found that hurricanes are dropping more rain, which means more flooding. Flooding is consistently the most deadly and damaging effect of a hurricane. Studies show many people underestimate the flood risks from hurricanes. Just a few inches of moving water can make it impossible to stay on your feet or control your car. Add all that to the current pandemic, and you get a dangerous situation, especially for people living in the path of the storm. As NPR has reported, safe options for people who evacuate this year could be limited because group shelters might accept fewer people in order to maintain social distancing. ………. “People are becoming more vulnerable as this COVID crisis goes on,” Morris says, as more people get laid off or run out of savings. “We have frankly been failing to serve the most vulnerable, and the people who have been made vulnerable by these cascading catastrophes.” Wildfires and Climate Change The fingerprints of climate change are all over the Western wildfires, too. ………. Fires are burning more frequently and intensely in places where they’ve always occurred, and they’re creeping into places where they were previously rare. …………….. How bad it eventually gets depends on how quickly the world can reduce carbon emissions. But the past weeks should make clear: “Climate change and its impacts are not the future,” says Crystal Kolden, a fire scientist at the University of California, Merced. “They are now.” https://www.npr.org/2020/08/28/905622947/everything-is-unprecedented-welcome-to-your-hotter-earth?utm_campaign=storyshare&utm_source=twitter.com&utm_medium=social |
|
No comments yet.
1 This month
To see nuclear-related stories in greater depth and intensity
– go to https://nuclearinformation.wordpress.com/
Antinuclear 
Leave a comment