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Climate change and hurricanes

We’re living it now.

Photo: NOAA/NASA GOES-16

A group of top hurricane experts, including several federal researchers at the National Oceanic and Atmospheric Administration, published striking new research Thursday, suggesting that hurricanes in the Atlantic Ocean have grown considerably worse and that climate change is part of the reason why.

The study focused on rapid intensification, in which hurricanes may grow from a weak tropical storm or Category 1 status to Category 4 or 5 in a brief period. They found that the trend has been seen repeatedly in the Atlantic in recent years. It happened before Hurricane Harvey struck Texas and before Hurricane Michael pummeled the Gulf Coast with little warning last fall. Hurricane Michael, for example, transformed from a Category 1 into a raging Category 4 in the span of 24 hours.

The study, published in Nature Communications, describes its conclusion in blunt language, saying the Atlantic already has seen “highly unusual” changes in rapid hurricane intensification, compared to what models would predict from natural swings in the climate. That led researchers to conclude that climate change played a significant role.

“Natural variability cannot explain the magnitude of the observed upward trend,” they wrote. The research was led by Kieran Bhatia, who conducted the research as a graduate researcher at Princeton University and NOAA’s Geophysical Fluid Dynamics Laboratory.

“There’s just a whole host of issues that come along with rapid intensification, and none of them are good,” said Jim Kossin, one of the study’s authors and a hurricane expert with the National Oceanic and Atmospheric Administration.

The increase in prevalence of rapidly intensifying storms, Kossin said, means both that there are more strong storms overall and that there are more risky situations near land.

“Rapid intensification is exceedingly dangerous because people, they’re not warned adequately, they’re not prepared, many of them don’t evacuate,” he said.

The findings come in the wake of two of the most damaging years for hurricanes and other extreme events. In 2017, according to NOAA figures, the United States saw $306 billion in disaster losses, largely driven by Hurricanes Harvey, Maria and Irma. In 2018, Hurricanes Florence and Michael were major factors in a $91 billion damage total.

You can see the study here. People can believe whatever they want to believe about climate change. We’re going to experience the effects of it regardless.

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