Climate change added at least 10 per cent more rain to Hurricane Ian, a study prepared immediately after the storm shows.
Thursday's research, which is not peer-reviewed, compared peak rainfall rates during the real storm to about 20 different computer scenarios of a model with Hurricane Ian's characteristics slamming into the Sunshine State in a world with no human-caused climate change.
Forecasters predicted Ian will have dropped up to two feet of rain in parts of Florida by the time it stopped.Wehner and Kevin Reed, an atmospheric scientist at Stony Brook University, published a study in Nature Communications earlier this year looking at the hurricanes of 2020 and found during their rainiest three-hour periods they were more than 10 per cent wetter than in a world without greenhouse gases trapping heat.
Ten percent may not sound like a lot, but 10 per cent of 20 inches is two inches , which is a lot of rain, especially on top of the 20 inches that already fell, Reed said. MIT hurricane researcher Kerry Emanuel said in general, a warmer world does make storms rainier. But he said he is uncomfortable drawing conclusions about individual storms.
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