Global "Warning"

[UGAalum94]

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.

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?

[cheerfulgreek]

Originally Posted by UGAalum94

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?

Yes, because it's an average numbers comparison.

Also, if you look at the total number of hurricanes and their power measured by wind speed and duration, it's jumped 50% since the 1970s.