Quote:
Originally Posted by cheerfulgreek
I don't think Katrina was abnormal, I was just saying that frequency is not the same as intensity. On the whole, the number of Category 1, 2 and 3 storms have fallen slightly, while the number of Categories 4 and 5 storms have climbed dramatically. Let's go back to the 1970s again. Back then, there was an average of about 10 Category 4 and 5 hurricanes a year worldwide. Since the 90s, the annual number has almost doubled to 18. Overall, the big storms have grown from around 20% to about 35%. That's a big increase. So it's the frequency I was speaking of.
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Can we be 100% sure that some of this isn't tied to the degree to which we can/do measure things now versus how we did it in the 1970s?
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