 In an article in "Nature", Kerry Emanuel stated that potential hurricane destructiveness, a measure combining hurricane strength, duration, and frequency, "is highly correlated with tropical sea surface temperature, reflecting well-documented climate signals, including multidecadal oscillations in the North Atlantic and North Pacific, and global warming".Emanuel predicted "a substantial increase in hurricane-related losses in the twenty-first century".Research reported in the September 3, 2008 issue of "Nature" found that the strongest tropical cyclones are getting stronger, in particular over the North Atlantic and Indian oceans.