Although not a scientist, Graybeard is skeptical too.
"suggested that global warming may be causing"
When I was a child, there were palm trees growing in my yard in south Georgia, and there were bad hurricanes, like Camille.
The palms literally 'died', completely gone, and there were milder hurricane seasons. After about thirty five years, for no aparant reason, the palms started growing and flourishing again over the last two years. Now we have rougher hurricanes. Global warming, or a normal 'cycle'. Perhaps its just evil palm trees?