The IPCC and other global warming alarmists predicted that the frequency of extreme hurricanes would increase because of CO2-induced global warming. At least that's what their theory told them.
Recently, climate researchers analyzed a large Florida sinkhole that had hurricane evidence going back some 4,500 years. This new empirical evidence now establishes that super hurricane frequency was much greater thousands of years ago, and that the modern era has experienced far fewer of these monster storms despite human CO2 and warming.
"Lane et al. developed a 4500-year record of intense hurricane-induced storm surges based on data obtained from "a nearly circular, 200-m-diameter cover-collapse sinkhole...reconstructed record of intense hurricanes revealed that the frequency of these "high-magnitude" events "peaked near 6 storms per century between 2800 and 2300 years ago." Thereafter, it suggests that they were "relatively rare" with "about 0-3 storms per century occurring between 1900 and 1600 years ago," after which they state that these super-storms exhibited a marked decline, which "began around 600 years ago" and has persisted through the present with "below average frequency over the last 150 years when compared to the preceding five millennia."" [Philip Lane, Jeffrey P. Donnelly, Jonathan D. Woodruff, Andrea D. Hawkes 2011: Marine Geology]