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A majority of Americans say that global climate change contributed to the severity of recent hurricanes in Florida and Texas, according to a new Washington Post-ABC News poll. That marks a significant shift of opinion from a dozen years ago, when a majority of the public dismissed the role of global warming and said such severe weather events just happen from time to time.

In a 2005 Post-ABC poll, taken a month after Hurricane Katrina ravaged the Gulf Coast and devastated New Orleans, 39 percent of Americans said they believed climate change helped to fuel the intensity of hurricanes. Today, 55 percent believe that.

The shift may in part reflect scientists’ increasing confidence — and their increasing amount of data — in linking certain extreme weather events such as hurricanes to climate change. Many researchers have been unequivocal that while hotter oceans, rising seas and other factors are not the sole cause of any event, the warming climate is contributing to more intense storms and more frequent, more crippling storm surges and flooding.

“Harvey was not caused by climate change, yet its impacts — the storm surge and especially the extreme rainfall — very likely worsened due to human-caused global warming,” Stefan Rahmstorf of the Potsdam Institute for Climate Impact Research said in a statement after the hurricane.

In a follow-up email to The Washington Post last month, Rahmstorf said that the explanation is just basic physics: The atmosphere holds more water vapor when it is warmer, setting the stage for more rain.

Yet for many Americans, the role of climate change has become as much about political beliefs as scientific findings.

Over the past decade, Democrats and independents accounted for most of the growing percentage of Americans who said climate change was a culprit in the intensity of hurricanes. While fewer than half of Democrats said climate change was a significant factor behind the intensity of hurricanes in 2005, that figure rose to 78 percent this month after hurricanes Harvey and Irma. Similarly, 42 percent of independents saw climate change as contributing to the severity of hurricanes in 2005 — a season in which hurricanes Rita and Wilma also hit the United States — while 56 percent now do.

https://www.washingtonpost.com/news/energy-environment/wp/2017/09/28/majority-of-americans-now-say-climate-change-makes-hurricanes-more-intense/?utm_term=.a92d6ef4b306

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